It can be many things; typically referred to as the pussy lips that guide the erect penis inside the vagina canal. Also known as bumpers in bowling for people who are bad at bowling.
Damn! Thats a fat puss bumper!

That puss bumper guided me in like a rocket.

I didnt know where to go, but the puss bumper directed me to the sweet spot.
by Truman Wojski November 20, 2018
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