Ask her cup size

Since you're not sure what liberties you can take with this woman yet, you decide to just ask her straightforwardly, but politely. "Excuse me, are you a D-cup?" you say.

She was watching her daughter finish dressing, but turns back to you when she hears you address her. "Hm? Yeah, go ahead," she says offhandedly. She pulls the knot out of her shirt with a quick tug and opens it, revealing heavy breasts with large, light-brown areolas. Her nipples are pierced with shiny metal barbells, and she has a tattoo of a rose curled around her right breast. She stands there calmly with her tits out, clearly waiting for you to make the next move.

Well, that answers that question, you think to yourself. You reach out and grasp one of her breasts, squeezing to feel its softness. She examines her nails idly while you grope her tits, not caring at all about what you're doing. You give her nipples an experimental tug as well, pulling hard enough to lift her breasts up off of her chest, but after that you let go. On any other day getting to see tits like these would be something to dream about, but you've seen (and felt) a lot of breasts today, and to be honest, you like Paige's better.

Still, you decide not to pass up the opportunity to play with her somehow. You're still spent from deflowering Avery, so at least for the moment you don't plan on fucking her mother too, but since she's here you might as well feel up her body for a bit. The novelty of getting to decide something like this so casually excites you greatly. Even if you don't feel up to another round of sex just yet, it's still a huge thrill being able to freely grope a woman in public—strip her clothes off, fondle her breasts, stick your fingers in her every orifice, whatever you like—without anyone making a fuss about it, including her. More than that, even: she's not just accepting of how you're feeling her up, but completely indifferent, as though having a stranger squeeze her tits in front of her family is an unremarkable, everyday occurrence. Which, for her, it is.

Now that you know she's free to use, you decide to have some fun with her, and really treat her like the whore that she is. It's not like she (or anyone else) is going to object to you playing with a big-breasted slut, after all. You've been enjoying yourself in this new reality all day, but now it finally feels like you're becoming properly acclimated to its conventions. Busty women are just willing sex toys, plain and simple. Some participate with enthusiasm, and some just lay back and let it happen—but either way it's normal and accepted, and you don't need to hold back or feel guilty about using them that way. You can do any depraved thing to them that comes to mind, without anybody objecting to it, and you intend to start taking full advantage of that freedom... and of her.

First things first, though. You could use a bit of clean-up; your cock is still smeared with semen and Avery's pussy juices. You grab a handful of her mother's wavy brown hair and say, "Suck me clean," pulling her head towards your crotch. At your direction she bends over and guides your cock into her mouth, running her tongue all over your head and shaft to lick you clean. You harden a bit at the feeling of her mouth on you, but let her continue cleaning you at her own pace.

In the meantime, Avery finishes dressing and gives you a little wave, saying, "Bye, John! Thanks again." She leans over to give you a chaste peck on the cheek.

"No problem," you say with a smile. "And hey, maybe I'll see you again sometime. I might come over to fuck your mom later, after all." You gesture down at her mother, who looks up at the two of you and makes an mm-hmm noise around a mouthful of cock.

"Okay, cool! See ya!" Avery heads back over to the picnic blanket where her father has been sitting. He gives you a neighborly wave as she sits down, which you return with one hand, using the other to push his wife's head further down onto your shaft.

After a minute she pulls back to examine her work, looking your cock over from every angle to see if she's missed anything, and then stands back up once she's satisfied. "That looks much better. Good job," you say, and tuck your penis back into your shorts. She does have a small blob of jizz on her lips, and on a whim you wipe it off with one finger and then stick the finger in her mouth. She opens her mouth enough to admit your finger, but she doesn't suck on it or otherwise react in any way. Her docility is starting to turn you on even more, actually—in contrast to Paige and her mother, who both participated in your sexual activities once you started them, this woman is clearly more on the completely passive end of the spectrum. It's different, but equally arousing in its own way.

You stick another finger into her mouth and push in further, reaching down her throat as far as you can. She makes some wet noises deep in the back of her throat as you sink your fingers in up to your knuckles, but she doesn't pull back or resist at all. You can feel the slick warmth of her tongue, which moves beneath your fingers slightly as you continue to probe her mouth. She's unable to swallow with your fingers holding her jaw open, and she starts to drool as her mouth fills up with saliva.

"What's your name, cumdump?" you ask as you continue to finger-fuck her face.

"Ha-aa," she tries to respond around a mouthful of fingers and spit. You pull your hand out of her mouth for a moment so you can understand her, trailing glistening threads of saliva. She coughs and swallows and tries again, finally managing to say, "Maya."

You nod and shove your fingers back into her mouth. "Hi, Maya, I'm John." She responds with a muffled "nish oo mee' oo," and can feel her throat flex around your fingers as she tries to form the words. For a moment you consider trying to make her puke, like you've seen in rougher porno videos, but it might be more effort than it's worth. Despite your rough handling, she doesn't appear to be in any distress—this woman clearly has no gag reflex to speak of anymore. You might see if you can get Paige to throw up for you later, as she hasn't been a public slut for nearly as long. For now, though, it seems that Maya's mouth has given you as much entertainment as it's going to.