The act of going doggy style with your woman, and sliding it out of hole one and going into hole two "unexpectedly". When she screams out in pain, you shove an apple into her mouth, like cooking a whole pig.
When you're in the middle bathroom stall, and two people walk in and go on either side of you in the other stalls.
I had to go to the bathroom real bad this morning, was all by myself until I got stuck in a French Melton!