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when one acts harder in front of an audience different from their usual group of friends or acting differently in front of a girl rather than their usual self.
a soft ass guy: GET THE FUCK OFF ME *threatens to punch*
friend: stop acting man cool.
man cool by J-smooooooove March 4, 2008

cool-man-cool

an elderly man who wanders around parking lots yelling at teenagers. usually has a story to tell
look at cool-man-cool over there giving us the finger and grabbing his nuts! hes crazy as shit.
cool-man-cool by cheeko February 10, 2005

not cool man 

when someone does something that is not acceptable, "Not cool man!" is usually an appropriate phrase to inform them that what they did was not nice, cool, funny, or tolerated by society, or just you.
Uncool guy: My butt is so awesome....
Cool guy: Not cool man!
not cool man by Shiraz rocks mannnn February 3, 2018

cool man 

a sarcastic and dismissive phrase used when indicated that you've spotted someone is trying to brag and you couldn't give a shit
Person 1: Yeah mate, just been at this messy party

Person 2: Cool man.

Person 1: No seriously I got so drunk I had to be taken away in ambulance

Person 2: Cool man!
cool man by Ellsclark4ubaby August 24, 2009

A Very Cool Man 

A Very Cool Man or O' Holy Glorious Master is a person who is so awsome and cool he has this name, plus, he a an awsome pleasant called theo and is in TheRandomersism Religon

cool man syndrome

when you have the cool man sydrome you become cool

your skin around your face form around your eyes to create sunglasses and you are forced to always have a straight face
you also always have to wear cool man clothes, like a t shirt and jeans or pants
anything that is not those will make your skin make it's own clothing out of the same material
"hey joe, you look like you got cool man syndrome."

"it's because i do, george, we talked about this."

"so how's the family?"
cool man syndrome by Gynuq December 15, 2019
More from Urban Dictionary

piddlefart

verb. To waste time doing nothing.
Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
Word of the Day on October 9, 2026
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
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