Justin Bieber is dropping by the Late Show With David Letterman again to announce the top 10, but that's not all he's going to do!
In a preview of Justin's Late Show appearance with David Letterman tonight, Justin reveals numbers 7 through 5 of the top 10 "Reasons It's Fun to Be Justin Bieber."
No. 7: "When I'm sick, my doctor makes hilarious jokes about 'Bieber Fever.' "
No. 6: "The chance to visit the Late Show and my idol, Paul Shaffer."
No. 5: At the barber shop I can say, "Give me the me."
But then Justin rocks out on the drums to "Baby!"
Watch the preview below!