All actors are over 18 years of age in this story.
*
Bobby was feeling pretty good about himself, he had impregnated his step sister and step mother. He enjoyed watching their bellies swell to unbelievable proportions and their tits grow, filling with mother's milk that he'll enjoy sucking and drinking out of their engorged nipples. But tonight is a very special night, his other step sister, Susie, turns 19. Susie was different, she had really blossomed over the past several months, and her body had really filled out. Much more so than her sister and mother. And, she was working it, wearing tight clothes, bras so small they forced her ample cleave high above her open cut shirts. It was driving Bobby nuts.
He heard her mother call her voluptuous, he called her very fuckable and couldn't wait to get his hands on her soft body and huge tits. He wondered what was going to happen to her body once he impregnated her. He imagined she'd have the biggest belly and those tits, oh my god, he saw what happened to Susie's tits. They swelled from C to DD cups and Susie was already a DD or maybe even a DDD. It was hard to tell, but he'd find out tonight just how big those tits actually are.
It was a special Saturday, Sissy had given birth to their kid a couple of days ago and it was Susie's 19th birthday. So, they invited some neighbors over and threw a really big party to welcome home the new baby and to celebrate Susie's birthday. Bobby's dad, Jeb, was looking at his wife, scratching his head, still trying to figure out when exactly he'd cum inside her. Her pregnancy was still a mystery to him. Oh well.
Anyway, people were having a great time, eating, drinking, and dancing to the music. Bobby was glancing around the room when he noticed Susie looking at him, she had a hunger in her eyes and she looked like she wanted to fuck him right then and there. She put down her drink and walked toward him swinging her wide hips, her tight shorts barely able to contain her ample bottom. Her cleavage pushing through her low cut halter top, she pulled him into her body, pressing her breasts into his chest. She pushed him backwards into the front bedroom, locking the door behind them.
"Hey there big step brother, are you ready to fuck a baby into your little step sister? I bet you are. I've seen you looking at my tits, I know you've been wondering how big they are but I've been wearing really tight bras, just to keep you guessing."
Her top came off and she reached behind her undoing her bra. Her breasts feeling relief, spilling forward into her hands. She let them slide from under her hands, her large nipples begging to be sucked and played with.
"There now, that feels so much better. Do you want to feel them? How about sucking on them, I bet you want to bury your head in them, don't you? Like I said, I've been wearing a small bra but as you can see they are really large, an F cup in fact."
She really enjoyed taunting and teasing him. This step sister was a real slut. She kissed and licked the top of her big tits with one hand while she stroked his cock with the other. There was a soft knock at the door.
"You guys okay in there?" it was Susie's mother, Bonnie.
To his surprise Susie unlocked the door "Come on in mom, join the fun. I was just getting ready to tit fuck and blow our horse dick stud."
"Oh good, I haven't missed anything yet." Both women turned their attention to Bobby. He was totally turned on by the thought of being pleased by two women.
Susie pulled down his pants, his dick was harder than ever, springing out in front Susie's face. "Oh my, it looks like somebody needs some relief. Let's see what we can do about that."
Bonnie joined Susie, both women licking his shaft. Susie moved her mouth to service the tip of his dick, her tongue licking and swirling around the edges. He moaned in pleasure thinking that there was nothing better on earth than two women playing with his monster cock.
Susie wrapped her F cup tits around his baby maker, squeezing them really tight, while Bonnie poured baby oil in her cleavage.
"Come on Bobby, fuck my tits. Slide that huge dick of yours in and out of my tits."
With her tits squeezed tight around his shaft Bobby fucked her big tits. Every time the tip of his dick poked through the top of her cleavage her waiting mouth and tongue kissed and licked it.
The sensation of her soft tits fucking his dick, her tongue and mouth licking and sucking the tip of his dick, while Bonnie sucked on his balls brought him to release.
"Stop, stop, stop he's getting ready to cum" Bonnie said.
Susie immediately released his dick from between her tits. His aching cock robbed of an ejaculation. "Oh shit, that's flat out mean!"
"Now Bobby, you didn't think that I was going to waste all that potent baby batter of yours by letting you cum on my face, did you? Tell you what, after you get me pregnant, you can fuck my swelling tits and cum all over my face anytime you want, deal?"
"Deal, little step sister." Shit she was a slut.
Another soft knock at the door, "Hey what's going on in there?" it was Sissy.
"Not much, Bobby is getting ready to make me a mommy."
