Mexican Sandblaster
The Mexican Sandblaster is a lesser-known degrading sexual act in which one party (most commonly a man) sprays diarrhea on the face of their partner. Most commonly, preparations for the Mexican Sandblaster include mass consumption of laxatives, dried fruit or any abundant source of fiber.
Yeah, that cunt was bein' all "Why don't you get a job you lazy fuck" so I gave her a wicked Mexican Sandblaster that almost woke her parents up!"