A very specific time of the night when the crazy drunk boys you're hanging out with decide to remove their shirts seductively, yelling, "Does anybody know what time it is...? o yah!!! its shirtless o'clock!"
All the boys shouted, "It's shirtless o'clock!"
by Shayna007 August 22, 2006
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Any male who goes shirtless in public events such as concerts or parties. Usually drunk. Most often wearing inappropriate shorts or cut offs. Varying styles of facial hair and is always tanned or sunburned. Most often seen with a mullet. Always a complete fucktard.
We were all having a good time watching the band until that shirtless wonder showed up and started hollering and dancing in front of the stage.
by Cabe April 29, 2005
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When a hot bodied boy/man named Tom is requested to take his shirt off for others amusement or for sexual reasons.
Can i get a shirtless tom in the chat?

I'm so keen for a shirtless tom right now!
by JRosey April 9, 2020
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A photo a guy sends you with their shirt off showing themselves off. Generally sent when he likes you.
Omg Tommy just sent me a shirtless picture! I think he likes me!
by terrifictoledo December 16, 2019
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Any man who poses for his pictures on Facebook shirtless, every time, without fail. Pictures usually taken with a cell phone in the bathroom mirror, or flexing for his friends. The only picture more annoying than this is the " Duck Face " photo.
Dude, check out the shirtless wonder she just added as a friend!
by annoyedchick January 30, 2011
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A man whom is lacking a shirt
Guy: *is not wearing a shirt*

Person: Omg that is a shirtless man!
by Dhchbsjxhnxdg vbbbn March 18, 2019
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The homie who’s always shirtless when hanging out. He is often overweight/obese but doesn’t necessarily have to be. His role is to be the hype one of the friend group. He is responsible for keeping the energy going through the night.
Brad never wears a shirt and is constantly shotgunning beers, crushing it on his chest, and screaming “LETS FUCKING GO” at the top of his lungs. He is obviously the shirtless bro of the friend group.
by Goober879 February 4, 2021
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