a very solid and very tight panty which is used by the feminized slutboy to flatten his male genitalia when he cross-dresses. When used properly, the cock-eraser pushes the cock between the balls, squeezes the balls very close to the body, forbids any erection, and makes the ladyboy look like he has a cunt. Simple and solid child b.v.ds make perfect cock eraser on an adult male.
The slutboy: How do you like my new cock-eraser?

The Mistress: So tacky. It makes you look like the tart you really are. Keep it on. I like you that way, my no-cock boy...
by Ysengrim January 2, 2004
Get the cock-eraser mug.