Top Definition
the part of the shirt located just below the chin one uses to filter foul odors, instinctually used when in uncleanly bathrooms, or after a destructive passing of gas(fart, chemical attack)
1.Duuude.. that truck stop restroom was so narsty i had to use my shirt mask just to take a piss.

2.that fart was so pungent that my shirt mask was the only protection i had
by ganjer9 September 15, 2009

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