happyballoon Share definition Flag a happyballoon is a balloon filled with noz and u inhale so that it gets u fucked up 1)u goin 2 dat flyer 2)is they gonna have happyballoons 1)u kno dey is happyballoon by STOMPS July 26, 2007 0 0 Get merch Get the happyballoon mug. Buy Now — $32.95 See more merch