Refering to the size of an article of clothing (usually a man's shirt) where the article is clearly bought one size too small as to display one's musclularity. Usually worn but not limited to bars, clubs, or social gathering where high numbers of attractive females tend to congregate. Commonly mistakn for a shirt you stole from your 12 yr.old brother.
The size of shirt that a tool bag (see: tool) wears to try to look bigger and tougher than they actually are. Most time worn in conjunction with a D-bag haircut and an attitude. But don't be discurraged the shirt is easly penitrated by a swift and violent Falcon Punch, or a quick wit.
Normal guy #1: Dude, did you see that D-bag with the Extra smedium tapout shirt?
Normal guy #2: HAHAHA ya waht a tool. LOLZ!!
D-bag: WHAT DID YOU SAY FAG?
Normal guy #1: Look assclown just cause you wear an Extra Smedium Tapout shirt don't make you tough.