Chris Brown and Kevin McCall get into nasty Twitter fight

Chris Brown and his former music collaborator Kevin McCall got into some nastiness yesterday. Kevin, a singer/song writer, who helped Chris Brown craft some of his biggest hits, including Deuces and Yeah 3x, seemed upset about a business deal gone wrong and came for Chris on twitter. Chris Brown replied, and he was a little messy, implying Kevin is gay. See the tweets below...

And Chris Brown replied...