pete: phil, why do your lips look like u just ate a turd? phil: that bitch last night gave me brown lips
when eating out someone's asshole, the one getting his/her ass eaten out has diarrhea into the ass eater's mouth, staining his/her lips a shitty brown color
"pete: phil, why do your lips look like u just ate a turd? phil: that bitch last night gave me brown lips" What is the definition of "brown lips"?