Bed Condom 

The stretchy sheet you put on the mattress of a bed before putting the actual sheets and blankets on it.

Hey, don't lay directly on the mattress, put a bed condom down on it first.

Bed Condom by RCL93 April 19, 2010

bed condom 

a large sheet of plastic used to cover someone's dirty bed before you sleep in it while they're not home.

he sleeps around so much that i had to put a bed condom on his bed before i crashed in it.

bed condom by the real frank the tank April 21, 2009