Actually Jack, he used a very old term. In fact, it was "big" back in the days of Martin (Martin Lawrence Show) and Def Comedy Jam. Many guys would ask the DJ to cut the music, followed by a, "that's my joint." Used very frequently in those days by the "ebonics world" (everyday people).
Oh, and by the way. If he was trying to unleash the "new" phrase? He would have said, "Man, that song in the Geico Commercial is beast."
Glad to assist.