Definitions by GG_Rick

that's up

"up" can be used interchangeably with similar terms meaning cool.
thats up=thats cool, thats dope

I heard u banged that jawn last night....that's up!

I heard u were at that knicks game last night, thats up.
(seeing a kid smoke a j bone) - "thats up man"

that's up by GG_Rick February 5, 2014