A double cock, double blowjob in the doorway

"Damn it Rene. I said to wait for me." A familiar voice behind Max called out.

He turned around and a wave of confusion swept over him. Walking in the front door was a woman identical to the one sucking and stroking his dicks.

Rene popped her lips off his left cock to call out, "And I said hurry, Dori. I'm hungry for some cock. Now get over here and give our man some lovin' with me."

Max blinked as the copy of his girlfriend kissed his cheek before dropping to her knees and sucking his right dick into her mouth. The two women began fellating him in earnest, Max still wondering who the other girl was. It took a moment for him to realize that his dad must have turned his girlfriend into twins. An outside observer might think it was understandable that his brain was operating a little slow, a lot of his blood was in his pair of dicks.

He watched them, noticing that their blowjob technique was exactly the same as the other, only they were moving in opposite directions. Rene swirled her tongue around his cockhead clockwise, while Dori swirled her tongue counterclockwise. The also bobbed their heads at the same speed, but one took a dick into their mouth as the other pulled back on the other, then they reversed course. The contrasting feeling was incredible, and had him ready to blow his load in record time.

As a conscientious boyfriend, he tried to warn them. Rene hated getting cum in her mouth, and would get upset if he did it.

Only this time she didn't pull away, and neither did her twin. They both pulled back until only his cockheads remained in inside their pouty lips. He felt their tongues attacking his pisshole, coaxing him to blow his load.

With a loud groan he sent his swimmers on their way, both of his girlfriends sucking hard, swallowing down his seed.

He ejaculations when he had just one cock were powerful and exhausting. With two dicks, he struggled to remain on his feet as he filled both mouths to overflowing.

When they released him, Max stumbled back, smacking against the wall behind him. They didn't even notice, being too busy kissing and swapping his cum back and forth between them before swallowing it all down.

Max's cocks wilted, though he was turned on by the sight of the twins consuming his cum. It took a moment for him to realize his cum wasn't disappearing like it had done previously.

A chuckle from the living room made him turn that way. His father stood in the entrance to the foyer, an even larger cock hanging from his groin than the last time Max looked. As thick as a beer can and easily a foot long even soft, Andy's dick was impressive by any standard.

With a grin on his lips Andy said, "Like em? They're my gift to you for the ring. Oh, hold on."

A look of concentration appeared on his father's face, then Rene and Dori moaned. Max looked over at them and saw their blonde hair rapidly grow out, lengthening halfway down their backs. Then their shirts began to tighten, their tits swelling. Their clothes began to change as well, going from pizza delivery uniforms to cheerleader outfits, their much larger boobs filling the tops out so well they stretched and distorted his college logo. Finally their asses plumped up, their hips widening slightly under their skirts.

Andy nodded, pleased with his work. "There you go son, two perfect sex kittens just for you. You've got a bigger bed now too, so your girlfriends can spend the night. They can't get pregnant, will take your dick in any hole, and they love eating your cum. So have all the fun you like. Just save some energy for your mom. She's gonna need you to fuck her occasionally. I made her into a bisexual nymphomaniac, but she only takes dick from me, you, and your brother. Use her whenever you like, just make sure to share with your little brother. He's gonna need to drain his balls regularly, and he doesn't have his own cum slut yet."

He turned to head back to his bedroom, but paused and said over his shoulder, "Oh, don't cum in your sister's cunt. She CAN still get pregnant, and I want to make sure her first baby is mine."