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
2 more definitions
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
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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