I recently saw a recipe for a punishment enema using bananas. Green bananas are cut in half and each end lubricated with glycerine. Six halves are inserted (it can be done) followed by a super size tampon also lubricated with glycerine. If one leaves it all inside for as long as one can stand it, supposedly, the victim will begin to have terrific cramps, will lose his or her bladder control and suddenly evacuate the whole mess. I've tried it once and while it's not too hard to insert three whole bananas, I never experienced the cramps or the bladder problems.