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 3, 2009
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The official mascot of megadeth, much like Eddie of

Iron Maiden, Vic is notably known for his appearance on

megadeth albums, specifically Rust In Peace.

Vic has also appeared in numerous megadeth music videos, especially hangar 18.

He is a kickass motherfucker and wears the coolest

all-metal bolt on shade sunglasses of all fucking time.

Dave mustaine, the lead guitarist/leader/singer of

megadeth said he comprised the idea for vic rattlehead

because his mother always told him to stop headbanging

to music because his head would rattle, thus Vic

Rattlehead was engraved into the illustrious mind of Dave

Mustaine.
Vic Rattlehead is one sick motherfucker. Even though he is not as popularized on the new megadeth albums, he still kicks ass.
by I like megadeth December 30, 2010
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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?
*Drinks*
Oh that's why. It'll rattle your God damn head.
by bk709 April 22, 2018
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