Coolin Out 

verb: An alternative term for chillin or hangin out.

Jre: What's good bruh?

Tre: Nothing much . . . been coolin out like mad though with Erika bruh!

Jre: Yeah boy! That's what's up!

Coolin Out by Celest7 May 14, 2016

Coolin' out 

To chill out or hang out

Its what the Gs and the niggas do, it be how they roll.

Coolin' out, ya know what I'm sayin. But, but who's chillin around the Land? You know? Yo, who's chillin? I think I know who's chillin.
-Souls of Mischief - '93 til Infinity

Yo bro, waddup?

Nothing much brah, just coolin' out.

Coolin' out by mynameiskubibutucancallmeJ[rek] January 11, 2009

cooling out 

To cool out, and or chill.

Those bros were cooling out yesterday at the hookah bar.

cooling out by Megatroid June 30, 2008