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An expression on how something is... well, not cool. Very similar to the following expression: gay, retarded, lame, etc.
"Dude, you got drunk and danced naked in the middle of the freeway while singing "Jingle Bells" in Spanish?!"

"Dude, I know. Totally not cool."
_ _ _ _

Not cool situation: When you get an "F" on your math test because you studied the wrong chapter... three minutes prior to the test ^_^
_ _ _ _

*Bitch slap* <---- Not cool.
_ _ _ _

Boyfriend: "I have something to tell you..."
Girlfriend: "You love me? =)"
Boyfriend: "Uh, I'm gay."
Girlfriend: "What? NOT AGAIN! This is SO not cool"
by Psych! November 27, 2005
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Jan 15 Word of the Day
The Nussy, or the β€œnose pussy”, if you will, was discovered during the corona virus pandemic of 2020. People that had to be tested for Covid-19 had to have their nose swabbed right where the brain connects, which often led to people rolling back their eyes and gagging.

A nose-swab-fetish developed from this, because we, as humans, ruin everything.
β€œOh fuck yeah, swab my nussy”

Sir, please, I went to medical school

β€œuwu”
by Pogoextreme December 25, 2020
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2
When someone has done something which causes you anger and displeasure. You respond by throwing down any item which you are currently holding and yell: "NOT COOL!". Of great importance: the item which has been throw down is now considered community property and may be taken by anyone witnessing said event.
Cool Guy: (walking into a room of friends/coworkers eating burritos) Dude, where's my burrito?
Not Cool Guy: I think they forgot to make it. Or maybe I forgot to order it. (smirks)
Cool Guy: (throwing down container of guacamole -- which he intends those in the room to now eat) NOT COOL!
by not cool guy eating a burrito January 14, 2014
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3
Failing to be cool. Trying to be cool and being just pathetic.
-John: Hey, girls! Look at my new trainers! I think they're great!
-Kate (to her friends): This guy is just not cool.
by sicko2 March 02, 2008
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4
That shit just is not cool, man. Why'd you desert your homies at a time of need?
by Anon255 February 13, 2013
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5
The opposite of cool, ne β€˜uncool’.

Generally, someone who says they are β€˜cool’ is β€˜not cool’.
Blake says he is cool, but by doing so, Blake has proven he is not cool.
by Dr. John Brown July 17, 2019
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6
The ultimate phrase to describe those who are at times 'lame' as the terminology an American would maybe use.
by DarkestMaiden March 09, 2007
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