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 16, 2009
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When you space out your mask and make a lame effort to comply with pandemic protocols by pulling your T-shirt halfway up over your face, in the style of Mort in the Bazooka Joe comics.
Lookit this tool, tryin' to pass himself off with a t-shirt mask-querade.

Forgot her business, and now acting all nonchalant with her t-shirt mask-querade.

That t-shirt masquerade gives a good peek at his beer belly!
by Creed Cur May 1, 2021
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