Earlier this month a video went viral of aspiring rapper Kasper Knight shooting himself in the mouth in order to get publicity.

While many, including UFC commentator Joe Rogan mocked Knight for the act, which some viewed as an act of desperation, the rapper is now turning the tables on his critics.

Knight took to his Facebook with a message for Joe Rogan:

As MMA fans know, Rogan certainly has martial arts skills of his own. A 10th Planet Jiu-Jitsu black belt, and former elite level TaeKwonDo practitioner, Rogan certainly has plenty of credentials.