Top Definition
What you catch when you're in a hurry to go out so you put on pants that haven't finished drying, leaving your rear cold and wet.

a.k.a. assfreeze
Shit, I think I'm coming down with a case of butt pneumonia
#ass pneumonia #ass #rear #buttfreeze #derriere cold
by Scott OOX May 09, 2008
6 Words related to butt pneumonia
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