semi-chubby Share definition Flag To have a fully erect penis would be to have a chubby - semi chubby therefor would be to have a semi erect penis. "Hey hot stuff come suck on on this semi-chubby" semi-chubby by monkeymagicsucker November 6, 2013 0 0 Get merch Get the semi-chubby mug. Buy Now — $32.95 See more merch