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The sudden expulsion of air that shoots through your closed lips when someone says something really funny or really stupid.
Bimbo: I think I'll run for president
Normal Person: Pfbtpfbtpfbt!!! You just made my mouth fart.
by mouthfart March 17, 2006
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2
an utterance so stupid that it could only be a mouth fart.
Nikki: *trumpet noise with mouth*
Caroline: Jesus, that was a mouthfart.
Nikki: (pauses) *trumpet noise again*
by Ms. Ruff March 04, 2004
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3
The peculiar noise made by ones mouth when going down on your partner's junk. This occurs when the suction becomes too strong.
E-oh baby that feels good
(mouthfart)
E- what was that?
C- mouthfart.
E-oh, continue.
by Elantragirl May 30, 2009
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6
The classification of a fart after which it has encountered a mouth at point blank distance, the mouth closes and swallows the anal gasses.
" I woke up after the party with bad breath and a polaroid, and I knew I had expeirienced a mouth fart."


"Let your mouth fart be your guide."
by Big Ry2 August 10, 2005
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7
When someone eats poop and later , coughs
i eat shit for breakfast, i have a cold, i fart outa my mouth -__mouth fart
by yojazz January 08, 2011
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