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3.
Used in similar context to "for sure" or "hell yeah", when expressing acceptance or accordance with an idea or action.
John: Hey man, are you gonna come over and chill later?
Jack: Forsurezy bro, wouldn't miss it for the world!
by Toshi Iba November 26, 2006
 
1.
saying "for sure" in a cooler, and more inriched fashion
Brad: hey Todd want some juice
Todd: for surezies
by E.J.C. June 30, 2011
 
2.
The same as Forsurezy, but in the plural form. Used in similar context to "for sure" or "hell yeah", when expressing acceptance or accordance with an idea or action.

Can be used in sigular as well, which adds that extra street-cred to make you appear more of a hipster.
Dave: Hey man, are you gonna come over and drink some brewskis?

Davros: Forsurezies!
by Mystery G July 13, 2009