Everyone knows Keenan Cahill—the kid who sits in front of his computer in his bedroom and lipsyncs to every song on the radio pretty much.

Keenan—who suffers from Maroteaux-Lamy Syndrome—seriously gets my vote for being the bravest little dude in the world for having the balls to make these videos!

My personal fave to do date is his latest video for 50 Cent’s song “Down On Me.”

Check out Keenan on Chelsea Lately, and a clip of Keenan and Fiddy’s collaboration below. The full clip is here.