Penis and testicles
Ian, 40, a musician from north-west England, has paruresis or shy bladder syndrom
David, an IT consultant from the English Midlands, has paruresis or shy bladder syndrome.
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.