Just a little

While you gave Abby a few minutes to process, you thought about all of things you could do with the girls to blow her mind. But tits.

Maybe you could get away with this now, "Abby, you know it's important for us all to give each other pleasure, right?"

"Yes, but I'm not supposed to do the things you have been doing."

"Sure, but I think it would be very nice for me and the girls to see more of you. I think if you showed us your tits, we would all enjoy it."

She looked troubled, "I guess... I have seen all of you after all, and you'd just be looking, right?"

"Of course." For now.

That idea seemed to finally fit in her brain. She cautiously pulled off her shirt, unbuckled her bra, and let it fall to the floor.

"Wow," you said involuntarily. From behind you, you heard Madison say "whoa."

You stared for a minute but eventually remembered what was going on. "Abby, you are very beautiful, and seeing you makes us all happy." You heard murmurs of agreement behind you. "I think you should be very pleased with that."

"Thank you," she smiled, "it's weird but... I guess it's nice if you all like it."

"We do," you said confidently, "do you want some breakfast? I sure could use some."

After eating breakfast while shamelessly staring at Abby's tits, you asked "Abby, you said your cousin explained... um... sex to you?"

"Yeah after she got married, she and her husband did it. She said it was an important thing for a wife to do because her husband will enjoy it."

Holy shit, what had you gotten yourself into?

Emma jumped in, "what bullshit! Sex is so much fun! Your cousin is doing it wrong."

Abby looked confused, but concluded, "it did sound fun when you were with John last night."

Emma agreed, "yeah, it was great," she realized, "oh my god, you haven't actually seen anybody fuck, have you?"

"No, of course not," she answered, surprised that Emma would imagine otherwise.

Madison broke in and suggested, "you kind of know what it's like when John fucks Emma, and you saw Lily suck his cock. Maybe you would like to see what it's like if he fucks me?"

You appreciated the enthusiasm, "good idea Madison. Very good idea. Abby, I think it would be good for you to see how much fun sex can be."

Madison laid down on the couch. You lined your cock up with her eager pussy, making sure Abby could see what was going on. She was staring at your cock about to penetrate Madison's exposed pussy, "it's so big. How does it fit?"

"Like this," you answered. Abby gasped when she saw your cock disappear into Madison. Madison moaned in appreciation.

Abby watched intently as you fucked Madison. She was breathing heavily again, but this time you could see her glorious tits rising and falling as she did. As usual, Madison was vocal and left Abby with no doubt she was enjoying herself.

When Madison's pussy got you close, you looked back at Abby's chest heaving. "Abby, you haven't seen what cum looks like, have you?"

She was flushed and looked like she was going to pass out, but answered quietly "no."

"I think it would be good for you to see what it's like. How about I cum on her tits so you can see it?"

She answered quietly again, "okay."

You looked to Madison, who smiled and nodded.

As you started to cum, you pulled out of her pussy. It had been a while since you had cum on Madison, and it was a beautiful thing to see. Her tits and stomach were covered.

You looked at Abby, who could say only "oh my."

"I hope you liked that, Abby. It made me feel really good..."

Madison interjected, "me too!"

Abby was still looking at the mess you had made on Madison, "there's so much," she observed.