Sex + Dating

We Had a Doctor Bust 14 Penis Myths

It's kind of fun to make doctors sweat. They get to make us wait in chilly rooms wearing only our undies, so why shouldn't we be able to test their patience with a bunch of silly questions? That's where medical doctor and certified sex therapist Dr. Zuckerman comes in.

Zuckerman is the creator of the PE Program -- an online system that includes a home exercise program for self-treatment of premature ejaculation.

It goes without saying that this dude knows more about dicks than you did at 13. He's also a good sport and agreed to weigh in on basically every myth we've ever had about penises. 

Does Mountain Dew shrink your balls?

Drinking soft drinks (such as Surge and Mountain Dew) cannot shrink your testicles or lower your sperm count.

Will tight undies lower your sperm count?

Wearing tight underwear is not recommended for men who have a low sperm count or sperm-quality issues, because tight underwear might increase local heat in the testicles area. However, a healthy man can wear whatever kind of underwear he likes best.

Does constant bicycling mess up your penis?

Riding a bicycle for several hours a day with a saddle that does not fit you well can lead to erectile dysfunction, because it places continuous stress on the perineum (the area located between the testicular sack and the rectum) for hours at a fixed angle. With that said, nowadays bicycle companies are putting an emphasis on manufacturing saddles that are customized to men's anatomical structure.

Are chodes real?

It is possible for a man's penis to be both very short and very wide, creating a penis that is shorter than its perimeter. This condition is extremely rare, however.

What's the deal with showers vs. growers?

There are differences in penis sizes in different nations and races. Some men have a penis that is smaller when flaccid than others. What's important to remember is that, during an erection, a healthy man's penis grows larger.

Does Sting really have day-long orgasms?

There is no such thing as a day-long orgasm. There are some men who can have one orgasm after another (multiple orgasms -- a rare thing in men) but a single orgasm can't last for a whole day.

Do penis pills work?

For healthy men with a normal hormonal balance who are over the age of 18, penis enlargement pills do not work.

Austin Powers holding a penis enlarger
New Line Cinema

Do penis pumps work?

There are penis pumps that can help a man achieve an erection by using suction that creates a vacuum around the penis. Once the vacuum is created and the penis becomes erect, the pump is removed and a rubber ring is placed at the base of the penis to maintain the erection. The ring must be removed after a
maximum of 30 minutes.

Does the size of your hands/feet correlate to the size of your dick?

I'm not aware of any relation between the size of the hands or feet and the penis size.

Does marijuana lower your sperm count? 

Chronic (daily) use of marijuana causes a decrease in testosterone levels, which in turn can lead to a reduction in sperm count and sperm quality.

Is semen low-carb?

Semen contains a low calorie amount. Swallowing sperm will not make you gain weight.

Can penises break?

A penis can break. This can happen while trying to change positions during sex when the man's penis is still inside the woman's vagina, during aggressive masturbation, or when a man is having an erection during his sleep and falls out of bed on his penis.

Can guys with big dicks faint when they have erections?

There is no reason for a big penis to cause a man to faint while having an erection or during ejaculation.

Does masturbation cause hairy palms?

Absolutely not!

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Jeremy Glass is a writer for Thrillist and swears it's not his, baby!