10. The male orgasm lasts around 6 seconds

9. Smoking can shorten your penis by up to 1cm

8. Doctors can grow up to 23,000 metres square of skin from the circumcised foreskin of infants if used to treat burn victims

7. 1 in 400 men are flexible enough to give themselves oral pleasure

6. There is a fish with a penis on its head.. its called the Phallostethus culling

5. The penis is shaped like a boomerang during missionary

4. The biggest human penis is 13.5 inches. The man refused to star in pornos

3. If unused the penis can shrink by 1-2cm

2. A teaspoon of semen contains 7 calories

1. There are 42 different kinds of bacteria found on the penis – there’s fewer if you’re circumcised