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The gelatinous, viscous, amalgamation of diarrhea and usually seminal fluid that drips from the anal orifice down to the catholic schoolgirl knee-socks after a romping good round of buttsex.
Teacher: What is 3+3?

Student 1: I smell poop.

Student 2: Hey Jill, whats that stain on your socks??

Jill: O no i forgot my butt plug. The butt fluid is a-flowin'.

Teacher: Well, go confess.

Jill: Why? It's the priest's fault for ramming it in too hard.
by Barnaby J. July 13, 2008
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