In MY high school we would never, ever, ever use such expressions! Oh sure, we might say something like "Go stand on your head and stick your elbows up your anal orifice" or "Why don't you go engage in autoreproductive activity?" or "Mictruate on you!" or even "It behooves you to grasp your external aural appendages and exert a strong pull, and when you hear a loud popping sound your head will have broken the suction which is keeping it within your rectum."