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1.
Another way of pronouncing "cocaine". According to Rick James "It's one hell of a drug". Term was first publicly used by Dewey Cox in the movie Walk Hard.
Sam: Get out of here Dewey!
Dewey Cox: What are y'all doing in here?
Sam: It's called cocaine. And you don't want no part of this shit!
Dewey Cox: Kickain?
Sam: It turns all your bad feelings into good feelings. It's a nightmare!

Dewey Cox: I'm thinking maybe I'd like to try me some of that kickain.
by Tazz from the 650 January 02, 2012