Underwear Roulette Share definition Flag When it is unclear whether or not you need to poo or fart and you choose to take the chance. I just hit the chinese buffet and now I'm about to play underwear roulette. Underwear Roulette by Dilker October 25, 2014 0 0 Get merch Get the Underwear Roulette mug. Buy Now — $32.95 See more merch