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Someone who posts too many selfies on Instagram. Usually in a very intense and habitual manner.
Oh my gosh. Did you see how many selfies Heather posted on IG today?

Yeah she's a gram cracker.
by GemJJ November 11, 2014
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A person who is like a crack head with weed. i.e. would short you a gram of weed when selling a bag.
Man, that gram cracker sold me a 2.5 gram eighth!
by n0raj September 06, 2015
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An African American/Black person from the urban hood that acts like their an Caucasian/White person from the suburbs. Or the opposite of the racist term cracker used against white people...White Cracker/Brown Cracker
"It's just a roach stop acting like a gramcracker."
by Ken-N.Y. July 15, 2008
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A term for someone who is of mixed race (black and white).
"Gram" meaning brown and "cracker" meaning white
by Des February 20, 2005
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A term given to Caucasian pseudo-gangsters that always keep a single gram of marijuana in possession to convince others they're "stoners".
Hey man, did you see Tymon and his buddies waving that dime bag around? What a bunch of gram crackers.
by Mazzey June 22, 2011
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