Top Definition
Derivative of the prhases "the skinny" and "forreal/true story", the term can flip-flop to be used at the beginning of a sentence, or to emphasize at the end of one's own, or another's story.
Rashad: Yo, on the slim, you've got to be one of the most beautiful girls I've ever met.

Jessica: Ooh, thank ya baby.

Jah: The whole club was buggin, kid. Straight buggin' out when Jay-Z came out last night...on the slim/

Quincy: On the slim?
by I'nu October 16, 2008
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