Year: 2002

KRS-One of Boogie Down Productions made his name off epic battle raps like "The Bridge Is Over," but in 2002 he started a rap beef off a complete misunderstanding. Nelly had just dropped his track “#1,” a song on which he stated, “I'm tired of rappers judging what's real hip-hop/Half the time they be the niggas' whose album flopped.” KRS felt the line was a shot at him, since the emcee has a tendency to talk about “real hip-hip” and had done a song called "I'm Still #1" back in 1987—way before anyone in the Bronx knew about country grammar.

So KRS fired back with a song of his own, and eventually called for a boycott of Nelly's Nellyville, which was set to drop in June of that year. "Nelly challenged a sovereign power," KRS said, calling the boycott "the will of God." But in the end, KRS just looked like a bitter old man while Nelly's album sold almost seven million copies.