Slang for the crime of selling sham CDS (Controlled Dangerous Substances). So called because of the use of baking soda as fake heroine or cocaine due to similar appearance. Considered fraud and distribution of drugs in the eyes of the law.
Man, Dooky got caught selling that baking soda as dope, dawg; might be locked up for three years behind the damn Arm 'N' Hammer charge...
by Bigg Sexx December 10, 2010
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Cocaine, coke, blow, crack, white powda, rocks, magic rocks etc.
Oh look what came in the mail, a scale and some arm & hammer - Outkast

I got to make a million ... using no flows, just arm & hammer and four o's - Nelly
by Robin Pocket May 9, 2004
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When you put your penis in a girl's (preferably shaved) armpit and proceed to fuck it.
Miles: Would you have sex with an HIV infected girl or would you have a guy fuck your ass?

Me: Any kind of sex? Cause I'd Arm & Hammer the shit outta her.
by rolfmcphearson May 22, 2010
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