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When an acquaintance sits on a piece of chewed gum that you placed on his or her seat. This results in the ruining of whatever pants they were wearing and also results in people laughing hysterically.
Joe got the gum ass when he sat on his seat.
by Trident of Treason December 05, 2017
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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
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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
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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
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