Butt Faucet Edit Meaning

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.

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.