NFL investigating L.J.'s bad rap Posted: Saturday September 15, 2007 08:30AM ET Larry Johnson denied he was the rapper in the now-infamous song that played virtually everywhere Friday on the Internet. The man behind the recording first said the voice was Johnson's and then changed his tune. Still, the fact remains that Johnson's name has been connected to a song containing derogatory comments about the Chiefs, racial slurs, profanity and references to guns and weapons. The song on the MySpace Web page of a rap group called SBL Mob created enough of a stir that it even reached the folks in the NFL's New York office.