1 definition by Jumpman420

a person or a group of people who smokes bare weed
it can be used as an insult or as a general discription
Graham: "you know that 420 crew?"
Sid: "yeah mate i know em, proper bun heads"

or

Sid:"that boy Timmy he's a fucking bun head mate, all he ever does is blaze all day all night"
Graham:"Rah"
by Jumpman420 May 12, 2007
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