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a wet fart, or a drippy fart, or a nasty squirting fart,any fart that leaks more than air...
someone farts and it leaves a litlle residue BUT MUSTARD when you fart and have to wipe yourself or think you have to check your underwear you spit but mustard
by hassan.j March 04, 2008

Words related to but mustard

air shit ass glass b mustard butt mustard leaky fart.