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Large testicles mean greater infidelity, research finds


A study by scientists at the University of Oslo found that larger testicles make less faithful couples

A study by scientists at the University of Oslo found that primates with bigger testicles were more likely to be unfaithful

A study by scientists at the University of Oslo found that primates with bigger testicles were more likely to be unfaithful

There is a correlation between infidelity and the size of a male’s testicles, researchers have found.

A study by scientists at the University of Oslo found that primates with bigger testicles were more likely to be unfaithful.

Petter Bøckman, Assistant Professor, said: “We can determine the degree of fidelity in the female by looking at the size of the male’s testicles. The less faithful the female, the larger the male’s testicles.

“If the male will only fertilise one female and has no competitors, he only needs sufficient sperm to reach the egg. If the female mates on the side, it is smart to have as many cars as possible in the race.

“Then, the male must have testicles that are as large as possible.”

Prof Bøckman said bonobos have particularly large testicles and mate in large groups whereas gorillas have small testicles.

He said: “There is an abundant flow of semen. Those who leave the greatest amount of sperm have the largest chance of fathering offspring.

“In gorilla troops there is only one male. Even though the gorilla has a small harem, he has no need for large testicles – his balls are tiny.”

Large testicles can increase the risk of testicular cancer, the study found.

“Animals with short lifespans may have enormously large testicles. In one type of grasshopper the testicles occupy half their body mass,” said Prof Bøckman

“The testicles are even larger in sea urchins. They spawn directly into the ocean. To increase the chance of fertilising an egg, the sea urchin is a huge testicle with a little shell around it.”

The testicles of humans are one and a half times larger than those of gorillas.

Prof Bøckman said: “This testifies with abundant clarity to life in our flock. We can pledge our fidelity until we are blue in the face, but this is evidence that our females are cheating.

“We are not like chimpanzees, where the female has four or five sexual partners every time she is in heat, but there is always a certain likelihood that the neighbouring male has dropped by.”

The testicles are also large in animals that have sex with many females.

Prof Bøckman said: “Male lions have huge balls. All the females in the pride must have sex at the same time. When the female lions in the pride are in heat, he must mate with all the females every half-hour for three days.”

Complete Article HERE!

Balls and Scrotums: Low Hangers and Tight Purses

Hey sex fans,

I found a sweet article that compliments one of my most popular posts evah:  Great Balls of Fire!

by the balls

Balls, testes, testicles, plums, bollocks, gonads, knackers – all held in the scrotum, cum-sac, nut sack, ball bag or whatever your favourite description might be. It’s been my observation that balls run a distant second to the all-conquering shaft and cock-head when it comes to guys checking each other out. When was the last time you heard or read the line similar to “great balls mate – I’d love to suck on those juicy plums while I wank off” and if you did, would you think it a bit bizarre, a bit off colour? While cock size talk is paramount talk about balls just doesn’t do it for most guys. Pity, as you can be missing a treat.

  • Our family jewels, our package is something many of us take for granted, so let’s take a few moments to reflect on the similarities as well as the differences.
  • They produce sperm and testosterone – and that equates to an explosion of taste as well as giving us our horniness. That’s the best tag team I can imagine.
  • They can hang evenly, but more commonly they hang with one higher than the other, normally the higher one being the right one. What about your own? Checked lately?
  • Temperature variations can make a difference – the warmer the environment the lower the hang. Our jocks can affect our balls and the sac by being too tight and/or too hot. Hence the enormous variation in underwear and the inevitable journalist question – “Briefs or boxers?” Tension can be another factor in tightening the ball sac.
  • And for the scientifically inclined: Sperm is most prolifically produced where the temperature is 3.6 degrees lower than body temperature, that is at 35 degrees Celsius or 95 degrees Fahrenheit.
  • Hairy balls and shaving. Scrotums generally have some degree of hair on them. Have you noticed how hot and sticky shaved balls can be on a hot day? Hair can assist in the cooling effect on the balls. So weigh up shaving for sexual intrigue and sexual tension against comfort and cool balls. Read more about shaving in my earlier blog: “Wax, Shave or Trim?” (February 2014).trucknuts
  • The majority of us have two balls, but we could adequately function on one. An artificial one can be inserted into the scrotum for cosmetic reasons.
  • Men can get testicular cancer. Remember to check your balls every few weeks for any signs of abnormality. If there’s any indication of a lump, a swelling or any form of pain, go immediately to your doctor. Testicular cancer needs to be detected early but with any of these indicators you must appreciate that it needs investigating for whatever reason there is the oddity. Whatever your age, don’t be embarrassed about discussing it with your medical authority. A good time to check them is when you’re under a shower.
  • Cockrings and other penile and scrotal devices can have a painful and devastating effect on the balls if blood supply is interrupted or restricted. They should only be worn for limited amounts of time, with 30-45 minutes being a maximum. Read more in my blog of September 2013 “Cock Ring / Penis Ring – A Beginner’s Guide To A Stronger Erection!”
  • Bruised balls – if your partner has squeezed your balls too hard, you’ve slapped your balls too hard against a friendly buttock while you’ve fucked or otherwise over-exerted or bruised your balls then you may need to seek medical advice. Depending on the severity, bruising tends to dissipate of its own accord over a day or two.
  • Big balls – research is beginning to suggest that possibly men with big balls are in fact producing a higher rate of testosterone which can lead to heart disease in some circumstances.

With such a huge variety of balls and scrotum on our male partners, just be prepared that as you sexually explore more and more men, you’ll be amazed at the variety on offer. Lick and gently nip the scrotum. Individually or together gently roll the balls in your mouth. Let cock-rings and other toys stretch and otherwise highlight the plums – then polish them with the palm of your hand. Suck on an ice-cube before putting your cold mouth on to his balls and see the reaction. Notice the reaction in some men when their nipples are teased or squeezed that there is a direct connection to the balls and his shaft.

Whilst I acknowledge the overwhelming interest in body muscles, cock sizes and inviting arse cheeks, perhaps we should be checking out his balls with equal enthusiasm. I know I do!

Complete Article HERE!

The extraordinary case of the Guevedoces

Catherine and his cousin Carla, Guevedoces in the Dominican Republic

Catherine and his cousin Carla, Guevedoces in the Dominican Republic

The discovery of a small community in the Dominican Republic, where some males are born looking like girls and only grow penises at puberty, has led to the development of a blockbuster drug that has helped millions of people, writes Michael Mosley.

Johnny lives in a small town in the Dominican Republic where he, and others like him, are known as “Guevedoces”, which effectively translates as “penis at twelve”.

We came across Johnny when we were filming for a new BBC Two series Countdown to Life, which looks at how we develop in the womb and how those changes, normal and abnormal, impact us later in life.

Like the other Guevedoces, Johnny was brought up as a girl because he had no visible testes or penis and what appeared to be a vagina. It is only when he approached puberty that his penis grew and testicles descended.

Johnny, once known as Felicita, remembers going to school in a little red dress, though he says he was never happy doing girl things.

“I never liked to dress as a girl and when they bought me toys for girls I never bothered playing with them – when I saw a group of boys I would stop to play ball with them.”

When he became obviously male he was taunted at school, and responded with his fists.

“They used to say I was a devil, nasty things, bad words and I had no choice but to fight them because they were crossing the line.”

We also filmed with Carla, who at the seven is on the brink of changing into Carlos. His mother has seen the change coming for quite a while.

“When she turned five I noticed that whenever she saw one of her male friends she wanted to fight with him. Her muscles and chest began growing. You could see she was going to be a boy. I love her however she is. Girl or boy, it makes no difference.”

Child on swing



So why does it happen? Well, one of the first people to study this unusual condition was Dr Julianne Imperato-McGinley, from Cornell Medical College in New York. In the 1970s she made her way to this remote part of the Dominican Republic, drawn by extraordinary reports of girls turning into boys.

When she got there she found the rumours were true. She did lots of studies on the Guevedoces (including what must have been rather painful biopsies of their testicles) before finally unravelling the mystery of what was going on.

When you are conceived you normally have a pair of X chromosomes if you are to become a girl and a set of XY chromosomes if you are destined to be male.

For the first weeks of life in womb you are neither, though in both sexes nipples start to grow.

Then, around eight weeks after conception, the sex hormones kick in. If you’re genetically male the Y chromosome instructs your gonads to become testicles and sends testosterone to a structure called the tubercle, where it is converted into a more potent hormone called dihydro-testosterone This in turn transforms the tubercle into a penis. If you’re female and you don’t make dihydro-testosterone then your tubercle becomes a clitoris.

Foetus at 12 weeks

When Imperato-McGinley investigated the Guevedoces she discovered the reason they don’t have male genitalia when they are born is because they are deficient in an enzyme called 5-alpha-reductase, which normally converts testosterone into dihydro-testosterone.

This deficiency seems to be a genetic condition, quite common in this part of the Dominican Republic, but vanishingly rare elsewhere. So the boys, despite having an XY chromosome, appear female when they are born. At puberty, like other boys, they get a second surge of testosterone. This time the body does respond and they sprout muscles, testes and a penis.

Imperato-McGinley’s thorough medical investigations showed that in most cases their new, male equipment seems to work fine and that most Guevedoces live out their lives as men, though some go through an operation and remain female.

Another thing that Imperato-McGinley discovered, which would have profound implications for many men around the world, was that the Guevedoces tend to have small prostates.

This observation, made in 1974, was picked up by Roy Vagelos, head of research at the multinational pharmaceutical giant, Merck. He thought this was extremely interesting and set in progress research which led to the development of what has become a best-selling drug, finasteride, which blocks the action of 5-alpha-reductase, mimicking the lack of dihydro-testosterone seen in the Guevedoces.

My wife, who is a GP, routinely prescribes finasteride as it is an effective way to treat benign enlargement of the prostate, a real curse for many men as they get older. Finasteride is also used to treat male pattern baldness.

A final interesting observation that Imperato-McGinley made was that these boys, despite being brought up as girls, almost all showed strong heterosexual preferences. She concluded in her seminal paper that hormones in the womb matter more than rearing when it comes to your sexual orientation.

This is still a controversial topic and one I explore later in the film when I meet Mati, who decided from the earliest age that though “he” looked like a boy, Mati was really a girl.

As for Johnny, since he developed male genitalia he has had a number of short term girlfriends, but he is still looking for love. “I’d like to get married and have children, a partner who will stand by me through good and bad,” he sighs wistfully.

Complete Article HERE!

This Is How Guys’ Junk Stacks Up Against Each Other

By and

Will Varner / BuzzFeed

Over 150,000 readers took our very unscientific, informal poll that, which asked people with a penis what their habits with their beefcake are…

Nothing was off limits with questions ranging from size, shape, maintenance, and even insecurities people have.

These were some of the most popular results:

Most guys consider their dick size…average. Specifically, 66% of those polled or 75,000 people say they’re between 4-6 inches.

Most guys consider their dick size...average. Specifically, 66% of those polled or 75,000 people say they're between 4-6 inches.

Will Varner / BuzzFeed

68% of pollers answered that they’re growers not showers. Specifically, 69,400 people said they only get big when it’s time for action.

68% of pollers answered that they're growers not showers. Specifically, 69,400 people said they only get big when it's time for action.

Will Varner / BuzzFeed

Manscaping is a thing: 38% of people said they keep it trimmed down there because it looks good. But, 28% of people keep it very tidy, with little to no hair. And, 26% said they just live and let live down there.

Manscaping is a thing: 38% of people said they keep it trimmed down there because it looks good. But, 28% of people keep it very tidy, with little to no hair. And, 26% said they just live and let live down there.

Will Varner / BuzzFeed

55% of pollers admitted to being circumcised, 34% said they were not, and 11% of responders admitted that they are circumcised but they’re not OK with the choice their parents made for them.

55% of pollers admitted to being circumcised, 34% said they were not, and 11% of responders admitted that they are circumcised but they're not OK with the choice their parents made for them.

Will Varner / BuzzFeed

Dick pics aren’t as prevalent as the Internet would have us believe. 49% of responders said they’d rather show their member in-person than actually send a dick pic. But, 22% say they’d happily oblige if asked.

The Results Are In, This Is How Guys' Junk Stacks Up Against Each Other

Will Varner / BuzzFeed

Breathe easy because 66% of people say one testicle definitely hangs lower than the other. But if you’re not made that way don’t worry because 24% say that they’re pretty even.

Breathe easy because 66% of people say one testicle definitely hangs lower than the other. But if you're not made that way don't worry because 24% say that they're pretty even.

Will Varner / BuzzFeed

32% of responders say they’ve seen their friends penises and it’s not a big deal at all.

32% of responders say they've seen their friends penises and it's not a big deal at all.

Will Varner / BuzzFeed

40% of people say they’ve never tasted their cum before…but 36% say they have and 24% said maybe. Yum!

40% of people say they've never tasted their cum before...but 36% say they have and 24% said maybe. Yum!

Will Varner / BuzzFeed

When reaching the “big O” 27% of people say that when they shoot it hits their chest. 26% say it’s definitely a lot that cums out. But if you’re not in that boat, don’t worry because, 24% of people say the fluid just kind of just oozes out.

The Results Are In, This Is How Guys' Junk Stacks Up Against Each Other

Will Varner / BuzzFeed

Complete Article HERE!

Tricks Of The Trade — Part 3

Today I return to a series I started back in October. (You can Find the first two parts of this series HERE and HERE!) As you may recall from back then, a friend of mine, who is writing a book about male sexuality for women, asked me if I could be her go-to-guy for a bunch of questions she had about pleasuring a man which she wants to include in her book. I think it is only fair that you, my loyal audience, should get this information before anyone else does.


Does the concept of blue balls really exist? (With all of the tantric activity that goes on, I assume it’s more of a myth than anything else, but we would love to hear otherwise if I’m wrong!)BlueBalls

Yep, it’s slang for an actual condition — congested prostate or vasocongestion caused by prolonged sexual arousal. A dude’s balls and prostate will ache if an ejaculation/orgasm doesn’t dissipate the trapped blood that fills the vessels in his cock and surrounding genital area during sexual arousal.

During sexual arousal, a guys balls can increase in size 25-50 percent. This is particularly true for younger men; wouldn’t you just know it.

Are there any “secret spots” on the male body that we should know about, that aren’t on the penis or in the butt?

You know those two things on a guy’s chest? I think they’re called nipples. Some men’s nipples are hot wired to their dick. I know several men who are orgasmic through nipple play alone. Any man can learn to sensitize and find pleasure in their nipples or other parts of their body as well.

Are there any magical/mystical techniques that gay men have mastered that straight women should know about?

floppy critterThere sure are, but us gay men are sworn to secrecy about this. And I’m not about to break this sacred code of silence. However, every straight woman should have a good gay male friend that she can ask about things like this. Most gay men are not as discreet about this as I am. They will gladly tell you what they do to pleasure their men if you ask them. Get a gay friend, if you don’t already have one, and have the talk. You will be amazed.

What exactly is the Frenulum? Is there any biological purpose to it? Why is it so sensitive? And what should a girl do with it?

Actually a frenulum is a small fold of skin tissue that prevents an organ in the body from moving to far from a particular location. There are frenula at several points of the body, including several in the mouth, some in the digestive tract, a couple in the vagina, and, my favorite, the one on a guy’s cock.

This is an elastic band of tissue under the dickhead that connects to the foreskin, and helps cover the dickhead when not aroused. Sadly, the frenulum can be partially or even totally removed during circumcision.

Think of the frenulum as a guy’s feeble excuse for a clit. It’s loaded with nerve endings. If a chick wants to know what to do with a frenulum, all she has to do is ask herself what she likes having done to her clit.

Any tricks of the trade on what a gal should do with a man’s testicles? Anything that will really drive him wild?by the balls

Loads of guys like having their balls stretched. Guys have been stretching their balls for just about as long as us men folk have had balls to stretch…and that’s a mighty long time. The only thing that screams male virility and potency as much as a big dick is a pair of big low hangin’ nuts. In fact in many societies throughout history a man’s cajones were considered sacred. They were revered as objects of religious, social, cultural, and even magical power. In fact in ancient Rome, when a man would take an oath he would grab his balls, just like we put our hand on a bible today. In fact, some etymologists believe that’s where we got the word, “testify,” from the Latin: testis.

Men discovered early on that ball stretching was both erotic fun and relatively easy to do. Just to clarify…when I say ball stretching, what I really mean is sack (scrotum) stretching. One cannot really increase the size of his balls (testicles). Soon men in many societies were stretching their junk to call attention to their manliness. With the help of a stretching device of one sort or another, and there are several, men were able to lengthen their balls with very little effort.

A gal can help a guy do this. The simplest method, and you don’t even need no stinkin’ equipment for this, is called the manual method. All ya do is give your man’s huevos a nice sustained tug. Alternate your tugging with some nice ball massage. Over time this will help to lengthen his ball sack because you’re manually forcing it downward. The more you pull and the longer you pull, the more you will affect the hang of your guy’s balls. It’s also pretty sexually stimulating too.

This method is particularly effective after a hot bath or shower. His skin will be at its most pliable then. This method is safe and effective and even a rank amateur can pull it off, so to speak. This’ll be fun and pleasurable all on its one. Your guy will love that you are paying his balls some attention while you’re jerkin or suckin him off. And that will make him and his nuts much happier.

What are your thoughts on circumcision? We’ve read that it actually can cut off important nerve endings — is there any truth behind this?

Foreskin HugI am completely opposed to infant circumcision. It is genital mutilation. And yes, it can and often does remove important nerve endings. (See question 4 above and read below.)

As to adult circumcision, I need to say one thing from the outset. It’s a particularly thorny issue for me. I firmly believe in the right of an adult to augment, adorn and embellish, or in any other way customize his or her body. Just as long as that person has taken enough time to think it through. At the same time I am a furious proponent of genital integrity. So you see my conflict.

There are, of course, medical reasons for adult circumcision.

Take a really close look at a foreskin. I mean a really close look. What do you see? Veins, right? If you pinch a foreskin between your thumb and forefinger as hard as you can; what happens? OUCH! Ya know why that is? A foreskin is just chock-full of nerve endings, darlin’. A foreskin contains about 240 feet of nerve fibers and tens of thousands of specialized nerve endings, which can feel the slightest pressure, the lightest touch, the smallest motion, the subtlest changes in temperature, and the finest gradations in texture.

In many ways, a foreskin is just like one’s eyelid. It covers, cleans, and protects a guy’s dickhead just like one’s eyelid covers, cleans, and protects one’s eye. A foreskin keeps the surface of a guy’s dickhead healthy, clean, shiny, warm, soft, moist, and sensitive. And there are a whole lot of us who think a foreskin is totally hot.

A foreskin is a specialized, sensitive, and functional organ of touch. No other part of the body serves the same purpose. Besides, if it’s cut off, it’ll remove 50% of the skin of the cock.

Finally, I’m of the mind that millions of years of evolution has provided men a covering for our dickhead for a purpose. And to remove it is simply unnatural.

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