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1.
The typical gauge of physical 'intimate' relations involves 4 bases. Change-Room Shit refers to all that nasty ass stuff that isn't properly represented by those bases. Such acts are usually given exotic names such as "The Portuguese Windmill" or "The Transylvanian See-Saw."
P1: Hey man, I walked into Pete's room by mistake while I was looking for Sanchez. He was hanging naked from the fan above 2 Scottish midgets and a sheep.

P2: Man, that's some change-room shit right there.
by MaryV12 February 05, 2012