Top definition
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 21, 2006
Get the mug
Get a shirtless o'clock mug for your buddy Bob.