he knew her clit better than her own fingers , alternating light butterfly touches of his upper lip against it with the rougher abrasion of his moustache , even as he sealed his whole mouth over her , brought his tongue out to play with her clit before delving in again , fucking her with his mouth in a way that made her think of that big cock prominently outlined in those indecent hose plunging into her cunt , stretching her .