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1.
Someone who talks like they know everything about anything but the only thing that comes out is pure shit.
Dave was a butt faucet at poker last night.
by captain_canuck July 22, 2005
 
2.
A drawn out series of runny, nasty, liquidy bowel movements, usually composed more of stomach bile than fecal matter, and most often quite messy and splattery.
I had dinner at a hole in the wall Mexican place last night and the butt faucet has been running ever since.
by Charlie Tang July 06, 2005