Jaden Smith premieres 'The Coolest' music video - watch
The new track is taken off his upcoming mixtape The Cool Cafe, which is expected to be available on October 1.
In the video, Jaden raps about "Mr Vicious with his missus blowing kisses to his mistress and his missus blowing riches like some hooligans".
"I'm the leader of the leaders on the leaderboard. We be winning when I'm spittin' I don't need to score," he also raps.
He has already released two tracks from the mixtape - 'Gonzoes' and 'Pumped Up Kicks (Like Me)'.
Jaden is the 14-year-old son of Will Smith and Jada Pinkett Smith. He will appear alongside his father in the new sci-fi film After Earth, out on June 7, 2013.