He forces his full length into you

He waits several minutes as your convulsions under him calm. Once you calm, he begins to kiss your neck and rub your crotch. The skin is completely tight, almost stretched to the point of tearing, over his cock, so he massages it as if to help loosen it. Strangely, this seems to help, and you find yourself letting out involuntary moans once again.

"Okay, I'm going in properly now. Let's take it slow," he says.

You shake your head, but he ignores you and begins to push into you. You let out a long moan as his push seems to get several inches of cock into you. He stops again, letting you adjust once more. This strange feeling of a foreign object stretching your insides leaves you breathless, and you feel a burning feeling at the entrance to your cunt.

"I'm more than half way in dear, you're actually deeper than you look. Usually I'm touching your mother's cervix by now. Aren't you proud of our daughter, dear?" he asks.
"You're amazing, Phoebe. But remember, he's mine," your mother says in a joking voice. Your dad laughs.

Once he hears that you've caught your breath again, he stops laughing, and without warning, he thrusts in much more powerfully than he had before. You scream in renewed pain as his cock hits a sensitive part deep inside - surely your cervix - and you feel something unexpected - his hips, against yours.

"Oh my god, have you ever been able to do that, dear?" you hear your mother say.

All you can do is scream, and writhe. Somehow, he's all in, and you don't seem to be broken.