Smoking can shorten your penis by a centimetre: To have an erection you need good blood flow. When you smoke it affects the blood vessels making it harder to achieve an erection.

Doctors can grow skin for burn victims using infants circumcised foreskin: One foreskin can produce up to 23,000 sq meters of skin.

The oldest known species with a penis is a Colymbosathon ecplecticos: This was a hard shelled sea creature. Its name Colymbosathon ecplecticos is Greek for “Amazing swimmer with large penis.”

Enlarged prostate glands can cause ED and premature ejaculation: If you notice a case of either chances are your doctor will be checking your prostate.

On average a males orgasm lasts for 6 seconds: A woman’s orgasm can last for 23 seconds, so much for equality.

You can reconstruct circumcised foreskin: Doctors take the moveable skin on the shaft of your penis and pull it toward the tip. It’s held in place by tape. Doctors later apply caps, plastic rings and weights. It may take years until you get full coverage.

1 in every 400 men is flexible enough to give himself oral: Though only 1 in 400 men can actually give themselves oral pleasure, it’s estimated that all 400 have given it their best shot.

There are 2 types of penises: A grower which expands and lengthens as it becomes erect and a shower which appears big but doesn’t get much bigger after achieving erection.

German researches say on average intercourse lasts 2 minutes and 50 seconds: Researchers have also found that women that it lasted as long as 5 minutes and 30 seconds.

Size does matter: Having a longer penis gives you better semen displacement when having sex.

King Fatefehi has probably had the most sex: He has supposedly slept with 37 800 women between the years of 1770-1784. That adds up to about 7 virgins a day.

Good looking men may have better sperm: Spanish researchers took pictures of good, average and lousy sperm. They then had women pick out the most handsomest men. In most cases the women chose the men with the best sperm.

Brain isn’t needed for ejaculation: The order comes from the spinal cord.

The most common cause of penile rupture is masturbation.