Top Definition
Where a woman, presumably a slut, makes an assertion, either verbally or by actions, towards her lack of promiscuity during the course of a sexual act with a complete stranger.
Dude, she was sucking on his dick five minutes after meeting him and was then uncomfortable with removing her bra as he was moving too fast, thats a I'm not a slut line if i ever heard one.
by Slaalaikum August 20, 2009

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