Justin Bieber vs. Aaron Carter: Backstreet Boy Nick Carter says fans should stick with 'original' American brother, 'go back to Canada Biebs!' [WATCH VIDEO]

Some fans consider Aaron Carter the "original" Justin Bieber. Other Beliebers think that those certain fans should just shut up. Meanwhile, here's what Carter's older Backstreet Boy brother Nick thinks...

That's right America - stick with Aaron!

The TMZ reporter gibes the elder Carter about his past BSB "beef" with NSYNC. That's when the 26-year-old "Aaron's Party (Come Get It)" singer pops in. And no Canadian teen can mess with him.

"Justin Bieber's cool and all ... a whole new generation .... but he's Canadian. Aaron's American," Nick says while Aaron backs off laughing.

Oh my - wonder how Twitter'll blow-up now...