John's Pregnancy Fantasy and Mel's Futa Fantasy

John continues to pound into his little sis's tight pussy. She's moaning and whining in ecstasy.

"W-what's your fantasy?" John asks.

Moaning constantly, her words are more than a little broken up. "B-Being a futa."

Snap.

John begins rubbing her clit with his thumb and on the top of her shaved pussy a little nub begins to show. John rubs it with his other finger and Mel gasps in pleasure, cumming instantly.

Snap.

John increases the size of his testicles again, which are now easily the largest pair of balls in the world now. He also increased the size of his already large dick, which is now growing in Mel's tight pussy, spreading her even wider. He also added a knot like base, to where he wouldn't be able to slip out of the female until he was flaccid.

"J-John!!! What are you doing?!" She yells in both pleasure and pain.

"Making sure that you get knocked up." He responds. His testicles are now loaded with sperm. The more sperm that a male has in his cum the thicker it is, and now John's cum feels so thick that it will all stay in Mel. His testicles are also mostly filled with cum, and it's easily enough to make Mel appear as though she'd be 9 months pregnant when he finishes emptying halfway into her. All of this plays into his head and he smirks. Her cock is now rock solid and John's been jerking her off for the past few seconds.

Snap.

This time it was for a pair of testicles for Mel, she's virile, or being an extremely fertile male. I smile again, thinking If I'm not going to knock her up, I'd love to see her do it to herself.

Snap.

This time it's to make her extremely fertile, enough so to get pregnant by a drop of pre-cum.

"Now it's time for my fantasy little sis..." John grunts. "Knocking you up with so so many kids." He says, punctuating his words with a thrust. "I gave you your fantasy, now let me have mine." He thrusts deeper, he already punctuated her womb the first time he pushed into her because of his long hard cock but now he can feel the top of it. He can feel his balls tightly pressed up against her pussy and ass.

"Y-Yes... please, fill me... you done so much to me, now let me do something for you." Mel whines, pressing up against him. She's grinding against his cock, milking it as she cums hard and long.

John grabs her and pulls her impossibly closer as he releases his cum into her, long and hard as her stomach starts to swell. Right as Mel begins to think that she'll burst John stops cumming, but he doesn't go flaccid, his knot remaining deep inside of her.

John sighs after a while and shuts off the water and picks Mel up. "We're going to have to head to your room or my room to finish." He says with a wink.