look up any word, like trill:
 
1.
Somebody who is on the receiving end of anal sex.
After Danny porked Tommy, Tommy was a confirmed Wetbutt.
by Flagger McCord December 13, 2004
 
2.
n. - a medical condition consiting of poop remnants mixing with sweaty discharge

characterized by: moistness between the butt cheeks

symptoms include: tire tracks in underwear paired with easily noticed offensive odor

common names include: soup ass, stink butt, swamp ass, crotch rot, and monkey butt
Darn, after running that mile, I had a mean case of wet butt.
by mike February 22, 2004
 
3.
When you poke a hole in the top of a water bottle and squirt it at someone's butt when they are standing in front of you without them knowing.
haha he just got a wetbutt and he doesn't even know it.
by rasta420 April 12, 2011