Cow Lips 

The mass quantity of labia, or "lips", on the vagina. Normally resemble that of the lips of a cow.

She pulled down her pants and all i saw were a set of cow lips. I couldn't see anything.

Cow Lips by Hookielao January 8, 2009

Cow Lips 

A Really really fat vagina.

Guy 1: Dude that girl you hooked up with last night
Guy 2: Nahh man she had cow lips...bitch was ratchet

Cow Lips by co_ January 31, 2014