1 definition by millymilly

Top Definition
Made famous by the Beatles. It means any drug (Stringe full of heroin, Marijuana, Cocaine, LSD). Happiness is a warm gun, it means that if you're on drugs you're happy, so happiness is a warm gun. One of the best terms ever created.
I'm not happy, I think I need a bit of warm gun.
by millymilly March 09, 2011

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