Top definition
A guy who insists on taking off his shirt while rambling on about how he's going to kick someones ass, but never fights
"Did you see that guy who wanted to fight last night?" "Yeah, what a shirtbag."
by johnnymoji February 15, 2009
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May 3 Word of the Day
Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)
Monica: Oh yay! I made a new mutual today because we started following & talking to eachother on twitter and we like eachother (so it seems).
by qtheresurrection March 25, 2015
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2
n. Place to store t-shirts in lieu of a drawer at closet. Usually used when homeless or between women to take advantage of.

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Saw Melvin yesterday.Looked bad. I think he's been living out of a shirtbag for a while.
by gnostic3 November 13, 2016
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