Justin Bieber's Friends Are Obnoxious, Speed Around Calabasas

As Justin Bieber parties it up in Miami watching the NBA championship, his L.A.-based posse is keeping things real in Calabasas: TMZ reports that Lil Za and Lil Twist, who live with the Biebs, were spotted tearing up the streets of The Oaks in Biebs' fancy-pants cars.

The two were caught on video as they sped past another driver, obviously breaking the 25 MPH speed limit. She finally catches up with them outside the gates of the community, where Lil Za gets out and confronts her, asking her to back up so he can get in.

She finally asks to go in first, and Za agrees, but not before telling her, "I live with Justin Bieber and you know I do."

Bieber, meanwhile, has been dropping tweets here and there about his time in Miami: