You might want to think twice before talking reckless to rapper 50 Cent on Twitter. One of his followers learned that the hard way over the weekend after she called 50 a “stan,” or groupie.

The diss happened after 50 tweeted the following while watching the American Music Awards:

“Chris brown ain’t no joke. I told ya’ll [that he's] the main event. I already left the show. That’s all I wanted to see.”

One of 50′s follower then responded to the rapper’s support of Brown by writing “stan” and re-tweeting 50′s message. The rapper didn’t take being a Chris brown groupie lightly.

“Look at ya fat a** face and your big black a** lips b*tch. I ain’t no stan.”

Ouch! The follower laughed off the comment, but has since erased her Twitter account. Still, do you think she was wrong for picking the fight, or did 50 exercise bad judgment by his response?