Exactly. I sit on top of him where the head of his dick is buried deep in my belly and I can feel the head push against my cervix, at the same time that my clit is grinding against his pubic bone. When he sees that my nipples are real hard and sticking out, he'll raise his head up and start to chew on them very hard-I can't last too long like that until I have a really explosive orgasm. He usually hasn't had a chance to come yet, so I'll lay down on my belly and let him fuck me from behind so that he can finally come and empty his balls inside of me.