A prisoner who is forced to occupy the bottom bunk so the other prisoner can rape them more efficiently. Sometimes used to illustrate extreme control used over a person not in jail, for reasons to degrade the other.
Motherfucker you still owe me 80 bucks! From now on your my Bottom Bunk Bitch until we're square! Skeet, skeet, skeet skeet!
by Mr. Bu Grundy June 20, 2010