Justin Bieber rappingIf being Usher's protege didn't give Justin Bieber enough swagger, this just-released video of the teen singing sensation rapping should do the trick.

Bieber dropped some serious news on his fans on Wednesday when he introduced his 5,716,387 (and growing by the minute) Twitter followers to his rapping alter ego, Shawty Mane.

"Speaking in tongues freestyle ... who knew i could rap lol ... my alter ego rap name is Shawty Mane ... hah," Bieber wrote.

In true rap-star fashion, Bieber opts for the age-old practice of taking shots at someone else (also known as "beef") in verse. In this case, Bieber's victim is Tom Brady, who was recently mocked for sporting a Bieber-esque hairstyle. "Hello Mr. Brady / Tell him to leave his hair to the guy who sings 'Baby,'" Bieber raps as he smooths down his iconic 'do.

Watch Bieber as Shawty Mane flow on 'Speaking In Tongues' below!