African-Americans invented cool as a stylistic defiance against racism during World War II. This is simply well-documented social, historical, and linguistic fact. To be cool in the 1940s referred to the ability to be relaxed in one's own style in any environment, an act of courage and mental strength for any Black person during the Jim Crow era. Whether meaning high praise ("Cool!"), vetting someone to others ("she's cool"), or referring to a relaxed state of mind ("I'm cool, man") -- our modern usages all began in jazz culture.
Oh, you don't gotta worry about him, he's one of us, he's cool.
That guy over there did the right thing, he's cool in my book.
She's not cool, better watch your back.
That guy over there did the right thing, he's cool in my book.
She's not cool, better watch your back.
by NYJackpot January 20, 2023
Get the Coolmug. 
When you’re space is cool but you keep the air conditioner(s) running because you hate the fucking heat and humidity.
“Dad, it’s pretty cool in here, should I turn the AC down?”
“Fuck that. I’m spite cooling this bitch”.
“Fuck that. I’m spite cooling this bitch”.
by Glorth2 July 12, 2023
Get the Spite Coolingmug. 
by 3976ty8hui August 14, 2010
Get the Cool your juice.mug. by CoolKidzzzz1234 January 7, 2019
Get the Cool Kidmug.