Butt flappers Share definition Flag When you fart and your cheeks flap together making a clapping song/sound, you can also said when you had a really bad day I have a BUTT FLAPPERS day Butt flappers by WingwangTAN September 21, 2018 0 0 Get merch Get the Butt flappers mug. Buy Now — $32.95 See more merch