Suburban slang referring to the fattious tissue surrounding the vaginal wall, and / or oft used as a colloquial reference to ones inherent or self-evident "sexual aura".
Did you see the "Mother's Lips" on her... It was right there in her camel toe.

Dang, that woman's "Mother's Lips" was banging...
by Robert J Sr. July 8, 2014
Get the mother's lips mug.
something you say to offend someone when they ask whats this. or to say something about there mother too piss them off
Ayden: hey whats this?

Logan: ya mothers lips
Ayden: *offended*
by thejewboi April 5, 2022
Get the ya mothers lips mug.