look up any word, like blumpkin:
 
2.
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.
by the real frank the tank April 21, 2009
 
1.
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.
by RCL93 April 18, 2010