A term used to express the bravery, courage, or assertiveness of a woman.
1) Girl #1 Oh my god, that cute guy in English class was staring at me all day! what should I do?

Girl #2 Geez, grow a pair of lips and ask him out.

2) Boy #1 Wow, I cant believe she told off the meanest teacher in school.

Boy #2 Yeah, that girl has a serious pair of lips.
by Steele301 June 26, 2010
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