Mounting tension

Noticing your attention, Erika smiles at you. "Oh, yeah, John! I've started lactating since you last saw me. Bet that's getting you hard, isn't it?" she teases as she brushes her hand on your raging hard-on, making you groan.

Paige laughs out loud. "Erika!"

Erika grins at Paige. "I should warn you, Paige, John here is a complete horndog. I think he knew my cycle even better than me: titfucking me at the breakfast table and blowjobs in the shower for a week, every month like clockwork. But I'm not exactly innocent, either. Sometimes I egged him on by flashing him on days when I was safe from prying hands."

Paige looks at Erika with astonishment, her laughter continuing. "You didn't!"

Erika shrugged. "What can I say? I was getting the attention a lot of the time anyway and I wanted to tease him. It broke the boredom. His frustration was so cute!" she squeals as turns to you. "But I'm a good sister, really. I was just thinking that Paige should beat you off onto my tits."

"Yeah, sounds fun!" Paige agrees with a smile before looking towards you. "Your sister's really cool, John."

You can only groan as your sister pulls you up from your seat. Looking towards Paige, you can see her smiling encouragingly. She must be feeling like she's becoming part of the family—this new reality speaks for itself if jacking your boyfriend off onto his sister's tits must be something that makes a girl feel like she's part of the family.

Your sister bends down to undo your jeans, which you step out of. She pulls down your underwear, freeing your aching member.

"Why, hello, Mr. Johnson!" she chirps ritualistically to your penis in an upbeat tone. "It's been a while, but we're gonna make you feel really good!" With a wide smile, she gives it a kiss on the left and the right. Amanda grins, looking at your erect member and licking her lips.

Paige laughs knowingly as Erika pulls you up onto the table, getting you to sit with your legs akimbo. "I always kind of envied girls who had straight brothers like this...Tyler's cool and gave me more space than a lot of guys, but I never got to play games like this with him."

Paige and Erika both pull off their tops, Paige maneuvering behind you and embracing you in a tight hug from behind. You feel her breasts push into your back warmly as she reaches for your cock. Erika kneels in front of you between your legs and pinches her nipples, looking like a sexy goddess of fertility.

Paige starts playfully pulling on your cock. "So, Amanda," Paige says with a deceptively light tone. "You've definitely got a sharp fashion sense," she remarks, indicating her short white skirt and her pink S.L.U.T shirt.

"I'm glad you noticed," Amanda says in a tongue-in-cheek manner. Despite responding to Paige, however, her eyes are locked in a state of seamless transition between you and your cock.

"What cup size would you say you are?" Paige inquires towards Amanda. Although she speaks in a relaxed, casual manner, what with her being behind you, you can't tell if her facial expression matches her tone.

Her gaze shifting from you to Paige, Amanda's eyes gleamed with something like respect. "Well spoken. I'm a lowercase-D cup," she says with some pride.

"I thought you might be," Paige admits with a light sigh. Amanda's face falls slightly as she hears this, as though Paige had just said something mean.

Erika tilts her head at Paige. "Come on, Paige, don't be like that. Amanda's a good friend. She just wants some of what we get every day."

Your interest is piqued at the exchange. "What do you mean, Erika?"

Erika looks at you with sudden exasperation. "Isn't it obvious, John? You've known Amanda for a long time. You know that her friends all ended up with bigger breasts, and you know how guys are. How could she get any attention while she was hanging out with us? She's been such a good friend to stick with me and the other big-breasted girls—full-time cumcatchers, all of us, since I got knocked up," she said, giggling and smiling at Amanda.

Paige is a bit quiet. You imagine that she's thinking about your concern for smaller breasted women before, gears turning. "Yeah, it's not fair," Paige admits, "but not every D-plus wants to live a cum-stained life, either. Some of us don't agree with every well-endowed woman being every man's sex-toy." Her hands are slick with your precum as she continues to stroke over your cockhead.

"Oh, let me know when you're going to cum, John," says Paige behind you, as if she was so into the conversation that she forgot was she was doing and suddenly remembered you. "We should get your jizz on your sister instead of my fingers."

"I'm getting close," you tell her. The surrealness of the women casually discussing the right to be used by men for sex while engaging in the act of it was acting as a powerful stepping stone to getting you there.

Amanda finally summoned up some emotional reserves, feeling it was time to speak up for herself. "Maybe we should be allowed to choose. I'd rather be free for the taking than completely ignored," she glowered in annoyance.

"Not to be rude," remarked Paige, "but why not just get a boob-job and make them bigger that way?"

"Maybe I like my breasts the way they are," Amanda sneered, cupping her breasts to display them to Paige as she glared at her with contempt. Her nipples were plainly poking through the shirt.

"Then why are you a wanna-D?" Paige questions, clearly not amused.

"Paige, no," Erika groans, as if trying to stop an argument from flaring up. She proves to not be quick enough, however, as Amanda's face turned red with anger.

"Maybe," says Amanda forcefully, "I just want a share of the sort of attention that you get, you big-titted cow!"

In a unexpected and surprising move, Amanda lifts up her pink shirt, flashing you her boobs of her own will. Her nipples are stiff and pink. "Why can't I live my life with what nature gave me!?"

Amanda's act of defiance—the boundary she crossed by flashing her C-cup tits at you—pushes you over the edge. You ejaculate thoroughly, exploding with ropes of your cum catapulting onto Erika's face and tits and then some onto her swollen belly. Amanda's wide eyes shining at you make it clear that this was no coincidence in timing; she must have planned this...