R&B singer Chris Brown has come under fire yet again for his bad temper. Brown — who was found guilty of assaulting his ex-girlfriend Rihanna and just recently completed an anger management class — launched into a profane tirade against former B2K member Raz-B on Twitter yesterday.

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Raz-B was the initial antagonist in the exchange, calling Brown out for disrespecting Rihanna. Brown responded quickly, accusing the singer of looking for attention and having a sexual history with his former manager and bandmates. But Brown's language was far more offensive and pretty much devoid of tact. Raz-B came back by alleging that Brown was a closeted gay man on "the down-low."

Not long after taunting Raz-B with mean-spirited gay jokes, he insisted, "I'm not homophobic! He's just disrespectful!!!" Later on, he declared "BTW... i love all my gay fans and this immature act is not targeted at you!!!! love" This afternoon, the singer sent a formal apology to TMZ.

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As can only be expected on a slow news day in the era of social media, Brown's hateful comments have spread all over the blogosphere, resulting in yet another PR fiasco for the troubled entertainer. Surely the Brown camp is crossing their fingers extra-hard that his promised duet with teen idol Justin Bieber can help put a positive spin on his tarnished image.

Chris Brown launches into homophobic Twitter feud with former B2K member Raz-B [EW.com]

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