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A person who enjoys headbanging, preferably to Heavy Metal music.
The word Rivvethead is often used in the same context.
Person 1: Dude, check out that crazy MF at the front row!

Person 2: Damn, that guy's a serious rattlehead!
by Dr. Strangesex May 03, 2009
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A drink based off the blacktooth grin, it is also named for a Megadeth song of the same name. It was invented in 2008 in CBS, Newfoundland by local musicians who are also Megadeth and Pantera fans

The drink is made up of:
One shot of Jack Daniels old number 7
One shot of captain Morgan dark rum
One shot of Coca-Cola (or enough to darken the colour)

Take it all, you little bitch.

It'll rattle your god damn head
Dude I got completely wasted last night. I knew I should have stuck to one rattlehead.

Hey man why is it called a rattlehead?
Oh that's why. It'll rattle your God damn head.
by bk709 May 29, 2018
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