Top definition
The area code of those living off the island of Montreal but still in the surrounding area such as Laval.
Kid 1: Yo you guys are from Laval?!?
Kid 2: Damn straight, we up in da 450!!!
by Andrew Couto June 28, 2006
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2
any 450cc dirtbike, which are the sickest bikes out
kid 1: he just got a 450!

kid 2: stupid fucks gonna kill himself
by anonymousdnpojnfgspodhgf August 19, 2008
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3
segregation between the south and the north. Lived in the North and south
get that 450 kid outta hur
by Yankee 450 May 22, 2006
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