In one of metal's more random feuds, Slayer guitarist Kerry King and Machine Head frontman Robb Flynn exchanged some choice words in the public forum.

In 2001, Kerry King marked Machine Head as 'sell-outs' when asked about the Machine Head album 'Supercharger,' further claiming that the band were "responsible for rap metal." After six years exchanging blows, including Flynn's claim that King looked like a member of Right Said Fred, the two buried the hatchet in 2007.