Credit: VH1 Photo: T.I. & Tiny: The Family Hustle Promo Poster

How mad do you have to be to start a fight with a professional boxer like Floyd Mayweather Jr.?

Rapper T.I allegedly started a brawl with Floyd at a Fatburger in Las Vegas early this morning (Sunday, May 25). According to TMZ, Floyd was eating at the restaurant when T.I. approached him and started fighting, reportedly taking a swing at the boxer and launching a massive scene, which you can see in part in TMZ's videos below.

Police told TMZ a Fatburger employee was "slashed" and injured in chaos, but declined treatment. In one of the videos, you can hear Floyd yell "control your bitch," which may be a reference to Tiny Harris, T.I.'s wife, who was also in Vegas to join the birthday celebrations for Floyd's daughter. (Tiny recently denied rumors that her marriage to T.I. was in jeopardy.)

It's not clear yet what may have caused the fight. TMZ says Las Vegas police arrived as Floyd was leaving but T.I. was reportedly already gone; T.I.'s rep had no comment about the fight. The developments keep coming in, so stay tuned for updates.

50 Cent has already had some fun at the brawlers's expense, posting an Instagram video mocking the feud, introducing it with "My little brothers crazy,first RAY j then Nelly now TIP.#smsaudio #animalambition."

Watch the videos below. Warning: Expletives for everyone!

Sources: TMZ, Gossip Cop, Instagram