Golden Chalice 

Leaving an inverted toilet plunger filled with urine propped up against the inside of a public toilet stall door, then climbing out the bottom of the side, leaving a booby-trap for the next victim.

When Dave opened up the toilet stall door, he got a Golden Chalice in the front of his pants.

Golden Chalice by W.E. Coyote August 20, 2003

Golden Chalice 

when one pees in another's butt.

Guy 1: Dude, I gave that crazy chick from Phoenix a golden chalice and she loved it.

Guy2: What's a golden chalice?

Guy1: I peed in her butt.

Guy 2: Wow I can't believe she liked that.

Golden Chalice by Funky Fred1 October 20, 2009