Mos Def Just Ripped into Justin Bieber

So I just came across possibly the best tweet of all time courtesy of a main twigga Mos Def.  Today he tweeted,

"I heard Justin Bieber has a 10 inch dick, but its in his ass and belongs to Usher."

I literally laughed out load in the middle of a silent room with 20 other people in it, but fuck them, that shit was hilarious.  This isn't first rip into Bieber.  He's got other ones that are just as funny.

Mos Def your my idol, right behind Charlie Sheen.  Keep winning and down with Bieber mayne.