2 definitions by FACK

It's like saying Fuck, only you can say it in front of young kids without getting any shit. It's also hella hyphy.
"FACK, my dick smells like an asshole stuffed with creamy tennis balls."
by FACK June 17, 2008
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A street name for a needle full of acid that you inject into your genital area to calm down massive erections.
"Wow, this Edlficbweruio made me cum all over the carpet"
by FACK June 17, 2008
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