Lip Flip Share definition Flag When you open and close your mouth while having a cock in your mouth. Desperate girls sometimes do it on lollipops... or cock pops. O_O A very, very, drunk boyfriend: Hey b-b-itch, lip flip me will ya!! *stumbles* Lip Flip by A HORNY GIRL June 4, 2009 0 0 Get merch Get the Lip Flip mug. Buy Now — $32.95 See more merch