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massive gas and shits caused by eating too much sugar free gum
"I just ate five packs of sugar free gum but now I'm paying for it because I have gumass."
by walterdunning July 17, 2008

Words related to gum ass

ass dirty asshole gum swamp ass
A partially wiped asshole that still remains unclean and retains enough moisture so as to stick together like a gummy substance.
"I've wiped three times today, but have still been walking around with this gum ass all afternoon."
by JD1 April 01, 2008
someone who chews their gum like a dumbass
Patrick:"Wow look at stephen, he chews his come like an idiot.. like a cow grazing"
Connor:"Yea, he's a gumass"
by playitagain009 August 26, 2009