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In a hotel room or rental, the act of intentionally leaving bodily fluids, especially sexual excretions, on the walls or furniture for the cleaning crew to find under black light inspection.

Intentional ejaculation onto walls or furniture that don't belong to you.
After an all night orgy Corey and his boyfriends left a CSI surprise on all of the walls in their hotel room.
by MasterBlaster6999 January 17, 2012