He doesn't stop.

"Sweetheart, keep your voice down", chuckled your grandfather, obviously having fun.
You can’t believe it. Your grandfather has his dick deep in you and it makes you very excited. Every time he plunges in you feel the tip of his huge schlong hitting your cervix. You wonder where your grandfather got this enormous penis from and where he gets his energy to fuck you like this.
"It’s been so long since the as you last time I have fucked a pretty girl like you, Naomi. I’m gonna make sure you remember this. I hope you're ready. "
His hands still caressing your boobs, his dick screwing the words out of you, you can't answer anything as you feel an orgasm hitting you. As you start to shudder, your grandfather takes a hold of your breast and plunges his dick as deep as he can inside of you.
Your mind goes blank as you feel him fill you up with his cum. You know he’s planting his seed inside of your womb, but you can’t do anything to stop that now. You feel his dick pulse as wave after wave of sperm fills you up, making your belly swell a little.
Suddenly, your grandfather takes holds of your hips and lifts you up, making you whimper as you’re glad it’s over, but too soon, you realize that it was only so he could place his dickhead toward your anus.