The emission of noxious odors from ones mouth.
"That pot pie gave me wicked mouthgas."
by Lboogie August 13, 2007
1 more definition
Top Definition
Burping. For instance, when you eat cucumbers and immediately start burping.
Abby ate some cucumbers on her salad and the mouth gas began.
by Rachel_atl October 16, 2008

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