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.
A sex move originated at Fordham University involving two guys, one girl, and a bunk bed. One guy sits on the long edge of the bunk with his legs hanging down. The girl then has sex with the guy on the top bunk while hanging her head and body down off the top bunk(she is suspended by the legs which are held down by the top bunk guy) and gives a blow job to the guy on the lower bunk.
"It sucks that we have bunk beds!" "Not when you can funk in the bunk."
Those two guys gave her a little funk in the bunk.
(verb)- To hook up with a person in the top bunk of a bunk bed. Can be modified into a double-bunk if there is another couple hooking up on the bottom bunk.