Watch Justin Bieber's 'Late Show' Top 10 Sneak Peek!

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!

OK! GALLERY: JUSTIN BIEBER BREEZES THROUGH THE BIG APPLE

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."

OK! NEWS: JUSTIN BIEBER — "SOMETIMES YOU'VE GOT TO LET THE GIRL WIN"

But then Justin rocks out on the drums to "Baby!"

Watch the preview below!