Wumbo Share definition Flag Wumboing is when you put milk in your asshole and plug it up with a buttplug to replicate having semen in you. Dude I can’t even fart rn cuz I’m wumboing and i don’t wanna leak Wumbo by goonchief69 March 28, 2024 0 0 Get merch Get the Wumbo mug. Buy Now — $32.95 See more merch