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.