chubby hippopotamus Share definition Flag A word you would make someone say while they stuff marshmellows into their mouth. Girl: Say it! Come on, please?Guy: Pubby bopobomaz!! *gag*(chubby hippopotamus) chubby hippopotamus by cannow February 18, 2010 0 0 Get merch Get the chubby hippopotamus mug. Buy Now — $32.95 See more merch