Mrs. Barstone

You are interrupted by Mrs. Barstone, one of your neighbors three houses down. She is in her early 40s, and looks great. She has large milky breasts, veritable watermelons due to her 8 children, and a round soft ass. Her face is cute and inviting, and she is also visibly pregnant...again. You figure she looks to be 8 months along, though you were sure she just had her last kid 4 months ago. You push the thought aside, and smile. "What can I do for you Mrs. Barstone?"
She isn't even looking at you, but is staring at Kako's left pant leg. She looks up to both of you, and her face reddens. "Um...who's your friend?"
"She is a new friend from out of town. Her name is Kako. Kako, this is Mrs. Barstone." The two shake hands.
Mrs. Barstone speaks up, "I brought some cookies I baked earlier. Stephen has a cold and won't eat them, and I didn't want them to go to waste." She offers you the cookies.
"Thanks Mrs. Barstone! Your cooking is always the best! Why don't you come in and enjoy them with us?" She looks back to her house.
"Well...OK. The husband is home today to watch the kids, and I deserve a break after all that cooking!" You show her and Kako into your house, and close the door behind you.
You set the cookies down and set down a few glasses of water afterwards. You take a seat and grab a cookie. They are as good as ever, and you almost forget about Kako while you enjoy the multiple layers of flavor. Mrs. Barstone doesn't. She speaks up, "Kako, is that your cock?" You do a double take at the blunt question. Kako responds by rubbing it, and it gets visibly harder. She smiles at Mrs. Barstone, who stares open-mouthed. She recovers, and reaches out to it and rubs it too. It grows, and grows...and grows. Precum leaks through her pink spandex, and you watch Kako stand up, and ask for your assistance removing her suit. You jump at the chance to undress your new lover for the first time. You slide it over her huge tits, tugging on it when it gets caught on her big nipples which are at least 2 inches long, and you bring it down to her midsection. You try to pull it down farther, but it catches on the hump of her ass. You move around back and are overjoyed to see her ass is also rather large and in that lovely bubble butt shape. You finally free her ass, and give her a pat there. You begin to roll the spandex down over her three legs, and with some effort, and no help, you manage to get it low enough so she can step out of it, cock swinging obscenely. Mrs. Barstone explains: "After 8 pregnancies, 9 now, my pussy is frankly completely loose. My husband loves me dearly, but he has problems getting off in my pussy. The tightness just isn't there anymore. I have been taking him up the ass almost daily since my 4th baby. I secretly have been getting myself off with a 2 liter Coke bottle just to satisfy my urges. But your new girl here is just what I need. The compassion of a female, with the cock of a horse. This is a lot to ask of you Kako, since I just met you, but will you please fuck me?"