Music fan bases are a legal type of cult. Not that cults are illegal, but if a bunch of Satanists and a bunch of Beliebers gathered inside a Starbucks there is a strong possibility the cops are getting called in regard to Lucifer's little helpers.

MTV's Clutch Blog has a great piece about the six scariest musical fan bases. Among them, the Claymates, rabid followers of 'American Idol' runner-up Clay Aiken.

The current Claymates should not be confused with the original Claymates -- uber-fans of the original claymation California Raisins. The Claymates disbanded in 1989 after it was proven that the Raisins lip-synced all of their songs and were stripped of their Grammy awards. Where did we get that info? Heard it through the grapevine.