Pee Chub Share definition Flag When a man has to urinate and his penis swells with urine, making his penis bigger. Usually when trying to hold his piss for a long time. I have a pee chub now cause I have held my piss for so long. Pee Chub by Tv 48 July 8, 2010 0 0 Get merch Get the Pee Chub mug. Buy Now — $32.95 See more merch