Penis and testicles
Ever been standing at a public urinal and found you couldn't go? You're not the only one. It even has a name - Paruresis.
STI's are the group of diseases transferred through sex. You know the drill: wear a condom.
Penises come in all shapes and sizes and usually there's nothing to worry about.
Circumcision is a medical procedure that is rarely carried out for medical reasons.
A tight foreskin can be extremely painful but it can be treated - often without surgery.
If you're not peeing out the end of your penis you may have undiagnosed hypospadias. It can be treated.
Bashing the bishop, spanking the monkey, jerking off - whatever you like to call it masturbation is a normal part of life.