Can be any piece of cloth that is used to pick up the remnants of 300 million potential children. Every teenaged boy owns at least one and it can be found near his computer or bed. Usually a white shirt that is worn under the main shirt.

Usually white in color. If you or a loved one uses any other color, you are unashamed to show everyone what you do when you're alone or your man juice is colored differently, in which cases, you're either going to need to get checked for STD's or see a psychiatrist.
The shirt that you reluctantly wear because you forgot to put your laundry in the dryer.

The family member of friend that you reluctantly look at because he/ she borrowed THE shirt and is wearing it.

The shirt you wore to Thursday's Black Light Bowling Night and everyone mistook you for a sperm bank.
by SoggyPancake November 8, 2009
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to fart only to find some goo came out also.
dude, gotta go home to clean up, I just shirted!
by The Goose February 7, 2005
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Often mistaken for an undershirt, the A-Shirt is actually a quality piece of pimping attire. Usually worn underneath a mostly unbuttoned shirt, or by itself to helplessly seduce the ladies. Quality.
That pimp in that pink Cadillac is sportin' and A-Shirt!
by Cute Mark March 25, 2003
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A piece of clothing for average people; nothing special really.
Wear your shirt!”
by Darkness666 November 3, 2020
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The Shirt, also known as The Tshirt, is available on the Urban Dictionary shop for $30. It is customizable, with 6 different color choices and sizes ranging from Adult Extra Small to 3XL, as well as the ability to put whatever you want on the shirt. It, unlike The Mug, is not advertised below definitions on Urban Dictionary.
Flintrinth Irvenfink: "Dude, you got The Shirt?"
Coltkin Drowtopper: "Heck yeah I did! Looks great, doesn't it?"
Flintrinth Irvenfink: "Man, I wish I had one."
Coltkin Drowtopper: "Guess what?"
Flintrinth Irvenfink: "What?"
Coltkin Drowtoppe: "I got one for you, too!"
Flintrinth Irvenfink: "Floomp yeah, man! You're the best!"
by Pursuer of Memes via Insanity January 28, 2020
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Became a national used phrase over night when said by Mike AKA "The Situation". As seen on MTV's popular series Jersey Shore (SEASON 2: EPISODE 2). The term describes when an individual, usually of the Guido/Tool variety sports a shirt like a wife beater, prior to hitting the clubs and hooking up with many wasted grenades and land mines. The Shirt he wears out will ALWAYS be ED HARDY, and he will have a plethora of colors from purple to yellow to red and everything in between! This phrase has set the stage for shops on the board walks to have beaters saying "SHIT BEFORE THE SHIRT" all over the East Coast.
Situation:
- I got the fresh to death kicks on, i got some jeans on, and i got the shirt, BUT i aint wearin the shirt when we go out, this is the shirt before the shirt.

- Yoo Pauly my dude after we GTL you gonna Shirt before the Shirt with me tonight when we hit the clubs and bring home some fine pieces of ass back into the Hot Tub.

Pauly: You know it Sitch right after i finish blowing my hair out with my top of the line products! (He uses Spiker for all you posers and wannabe guidos out there who are not even Italian)

Situation: Right on my dude, and if theres time we can get a quit lift in and see how much we can bench, deadlift and squat!
by GTLer August 14, 2010
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The act of smoking marijuana while doing laundry, followed by placing a batch of freshly dried/warm shirts upon the face resulting in a prolonged sensation of bliss.
Friend: What are you up to this afternoon?
Other friend: Shirting my ass off until all my laundry is done.
by dburneikis August 21, 2011
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