Impregnation

You get on top of your grandfather's young comare. Sofia reaches between your legs and guides your cock inside her warm pussy.

"Fuck me hard. Steal me from your grandfather." She asks sultrily.

You oblige.

"Oh yes!!" Sofia says while you fuck her. "Oh fuck, your cock feels so good inside me!!"

You continue to thrust in and out of her pussy. It feels so good. You both moan with pleasure. Your cock feels like it is going to explode.

"I'm going to cum soon!!" You tell her.

"Do it inside me!!" She begs. "Knock me up, make me yours!!"

You explode inside her.

You can feel her tight pussy contracting around your cock as you fill her womb with cum. The sensation is overwhelming.

You collapse on top of her. You feel her breasts against your chest.

"I think we should keep doing this until I'm pregnant."

"Of course."

You lose count of how many times you cum inside. Every last drop of sperm travels from your balls into her womb and fertilizes one of her eggs without fail. You and Sofia fall asleep in each other's arms, both pleasantly exhausted from baby-making sex.

Thus your grandfather's sexy comare becomes your future wife.