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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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

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt