The tip of human stool that protrudes from the anus because it can no longer be held back due to pressure in the bowel.
Rex: Man I gotta take a crap so fucking bad after that huge lunch.

Sam: Bummer man, you got a peeking rat?

Rex: Oh yeah, the rat is definitely peeking. I'm gonna go find a bathroom.
by drkato September 3, 2009
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