Why a Can O' Whoop Ass? Why not? You like to laugh, don't you? From chuckles to hearty belly laughs, Can O' Whoop Ass is made for people who enjoy a good laugh. Each style includes a Genuine Whoop Ass Certificate that's great for hangin' on the wall or emergency use during a toilet paper shortage. Certified 100% organic, septic system safe. Makes a unique and fun gift, 'cause everybody loves a good Can O' Whoop Ass ... and some people just need one!