look up any word, like dirty sanchez:
 
1.
When you pull your penis out of a girl and her vagina grips it so hard that it's pulled out an inch or two.
Man julie is so tight her lip grip is insane
by attacksblacks September 04, 2012
 
2.
Labia covering a penis during a sexual intercourse and its stretching back and forth.
We were doing it in a reverse cowgirl position, so the view of the lipgrip was amazing.
by keko_mleko March 29, 2013