Saunas get hot. Really hot. It's not uncommon to throw up from being in a sauna too long. So, in this prank we a sauna into an port-o-potty or vice versa. Fill a sauna with tons and tons and tons of poo and pee and filth, heath that baby up to a good 180 degrees. . . then throw the whole crew in there and see who can last the longest. HEAT + SMELL + FILTH = FUNNY.