Top Definition
A Fart
I need to go outside to expel my Butt Fumes
by Dollarbill1985 July 15, 2010
1 more definition
stuff that comes out your ass. Almost always used in conjunction with fartgas. Buttfumes are always expelled and never erupted unless following fartgas in sentence.
I erupted fartgas and buttfumes.
I expelled buttfumes.
by lightyeersaway April 14, 2010

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