Top Definition
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
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
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