While August Alsina has certainly built up a reputation as a guy who doesn't take any mess, many fans have yet to see the "No Love" singer actually swing or get swung on. Today, TMZ gained exclusive footage of Alsina arguing with a concert promoter backstage which led to a physical altercation.

The incident happened this past Saturday night at Chaifetz Arena in St. Louis, MO. Reportedly, the argument started because the show's promoter, Loose Cannon Slim, was upset over August showing up late. Words were exchanged and eventually, fists started flying.

Check out the video yourself, including Fabolous sneaking in to watch some of the action towards the end.

Source: TMZ