Top Definition
Akin to the nip slip. When a woman's pussy lip slips out of her thong or underwear. Short skirts and shorts provide the best opportunity for lip slip viewing.
Dude, after Chetto's girlfriend got up from the chair, I was pleasantly surprised by the lip slip she had going on with that short skirt.
by Merkin Donor II March 27, 2008
when the lips of a chick's pussy slips out of her panties.
when miss Johnson stood up I saw a lip slip.
by NCrules01 June 02, 2015

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