Definitions by 2004 b.

j cool

An expression for "ok" or "sounds good" without having to sound too out of place by saying iight, all right, etc.

Mark: I've got a lot of homework tonight, but I'm going skip it so we can go get something to eat later.
Kevin: J cool

j cool by 2004 b. May 17, 2006

To drop a comment, joke, etc. during conversation at the perfect time.

Jon Stewart can spot the landing like no other.