Perhaps when you asked your parents about cirucumcision and asked why it's done, they used this phrase to describe the prepuce. They're not the only ones who do.
Many Doctors consider it a worthless, useless, surplus piece of dermis.
New research has brought a better understanding of the foreskin and it's function. Yes, it has function. Several, in fact. Here we will examine the prepuce in all it's glory with pictures, descriptive text and links to supporting resources. The penis is structured around a series of long tubular tissue structures known as erectile tissue.