10 THINGS THAT YOU DONT KNOW ABOUT MEN's PENIS

• Smoking can shorten your penis by as much as a centimeter. When we say about good erection it is all about good bloodflow, and lighting up calcifies blood vessels, stifling erectile circulation. So even you don't care all that much about your lungs or dying young, spare the little guy.

• You know what...size does matter. The longer your penis, the better "semen displacement" you 'll achieve when having sex with a woman flush with competing sperm.
  

• Better-looking men may have stronger sperm. Somewhere that I read, Spanish researchers showed women photos of guys who had good, average and lousy sperm - and told them to pick the handsomest men. The women chose the best sperm producers most often

• There are two types of penises. One kind expands and lengthens when becoming erect (this is the GROWER). The other appears big most of the time, but doesn't get much bigger after achieving erection (this is the SHOWER). So are you a GROWER or a SHOWER?

• The most common cause of penile rupture : Vigorous masturbation. Some risks are just worth taking

• Only one man in 400 is flexible enough to give himself oral pleasure. It's estimated, however, that all 400 400 have given it their best shot at some point

• The average male orgasm lasts 6 seconds. Women get 23 seconds. Which means if women were really interested in equality, they'd make sure men have four orgasms for every one of womens

• An enlarged prostate gland can cause both erectile dysfunction and premature ejaculation. If you have an unexplained case of either, your doctor's looking forward to checking your prostate. Even if you're not.

• No brain is necessary for ejaculation. That order comes from the spinal cord. Finding a living vessel for said ejaculation, however takes hours of careful thought and often considerable amount of alcohol

• German researchers say the average intercourse lasts 2 minutes, 50 seconds, yet women perceive it as lasting 5 minutes, 30 seconds. Are men that good or that bad?