Earlier this month, Mike Tyson agreed to train Chris Brown for his upcoming welterweight bout with Soulja Boy. This morning he entered the ring himself by releasing a Soulja Boy diss track titled "If You Show Up."

"If you show up, it's going down / I’m gonna teach him how to knock your ass out," he raps.

"If You Show Up" is not a direct response to the two diss tracks Soulja Boyhas released in the past 36 hours -- Tyson began recording the song last week -- it may be better than the two Soulja tracks combined: "Mic Tyson" promises to make Brown's punches "sting like a venereal disease."

Tyson also takes a couple shots at Soulja's trainer Floyd "Fairweather" Mayweather for good measure, but ultimately his target is Soulja himself. "Chris Brown's gonna make you shit your pants."

Watch "If You Show Up" below.