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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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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.

...
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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