when two people realize they've kissed and/or made out with the same person.

addendum: the closeness of the relationship is dependent on the length of time passed between said incidences. Like, if two people "crossed paths" over the course of a week, it would be known as "lip twins." But if it occurred years apart it would be "lip cousins."
"ashley! i can't believe we made out with the same boy!"
"yeah. we're totally lip cousins."
by tengelke May 12, 2012
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A slang term used for a masculine man but acts like a bitch.
Man, Seth sure is a pussy lip paw.
by mommiemilkedme May 10, 2022
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Derived from and influenced by the podcast My Dad Wrote a porno.

When the lids of your body pop open. Most notably vaginal lips, mouth lips, butt lips.
“Their vaginal lids popped open in anticipation...undulating in desire”

“Did you see that girl’s pussy when I put my fingerdicks near it? I love popping lips!”
by Queercuntry69 March 5, 2021
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Swollen lips from a night out from licking them too much, often happens when taking MDMA.
You've got pure batty lips
by idontknowomgpls February 6, 2017
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Buttoning up your lip means to quit snitching on your people or yourself for your ship is sinking
Yo rat button up your lip your ship is sinking
by HollowLlama January 26, 2018
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A loose piece of a car's front fender, bumper, or skirt that flaps in the wind as it drives. Typically associated with minor accident damage that was hastily repaired.
Ronnie's Civic has a bad dog lip after he took out that garbage can.
by Mista FoSheezy July 2, 2021
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