Poutine Fries is slang for ejaculating onto feces that was released accidentally following an emphatic bout of anal sex. Specifically, as the male pulls out and is about to release, the recipient's bowels accidentally begin to move. However, as the male has already begun to ejaculate, the result is semen-covered feces. This is said to resemble poutine fries, the French Canadian dish of French Fries covered in gravy and mayonnaise.
Julian pulled out following some tenacious anal, but had already started to bust when his girl accidentally started to shit. Poutine Fries was on the menu that night.
by The Invisible Can January 18, 2013