How much do you know about the male penis? If you're a guy, It's been your friend, companion and plaything since you were born.

The average male penis size for your school, determined whether you were a hero or a goat. Ahhh, the joys of your physical education class and public showers.

Your main goal in life is to bury it back into a warm, wet, tight space, yet you only seem to be able to stay there for a small period of time. And you would do almost anything, or anyone, to achieve this goal.

As you grow older, you decide your penis must be broken. After all, it doesn't stand at attention like it used to and work on demand. This is not the way a man's BFF should behave.

Welcome to the wacky world of the male penis. Man-up and admit, you really don't know dick!