Becky slides you and Kim up her ass

By: Cheese111

Seeing Kim have so much fun probing little Willy's backdoor the giant woman decides it's her own butt that requires the most immediate attention. Without another word she swings her hand around, giving you both a good look at her humongous rear. At her current size it was truly spectacular, two beautifully rounded globes jiggling ever so slightly as Becky let out a small moan.

"Oh, you're just going to feel so good in there. Please keep squirming as much as you can."

For the first time Kim seemed to have some second thoughts about letting herself be used like this. Though she'd daydreamed about being in your position as you were shoved inside them yesterday, seeing it happen for real was still a lot more overwhelming. You felt her grip loosening as she sort of just stopped ramming her cock up your ass. Big Willy was still lodged firmly inside, but your sister was too awestruck to actively move as Becky's huge butt came closer. It filled your entire view, wobbling softly until Becky's other hand reached back and pulled one of the cheeks aside to reveal your destination. Your girlfriend's puckered hole was already twitching and pulsing like it was waiting to make a meal out of you two. You could feel Kim's doubts manifest as a nervous shiver, but for you this was an all too familiar sight. You've gone up there several times by now. You knew the horrors that lay ahead and in a strange sense, feeling Kim panic made you even calmer.

Becky smirked broadly as she plunged her toys in, feeling her asshole stretch just a little to allow their entrance. "Ooooh, that's what I'm talking about." She moaned as she felt the tiny wriggles and squirms of her playthings. With the both of them lodged halfway inside she leaned back to catch a glimpse of the action. She parted her cheeks with both hands now, craning her neck to see two pairs of squirming legs slowly sink into her depths. "Mmmm, yes, let it happen." She whimpered, her voice cracking slightly from the sheer intensity of the pleasure delivered down below.

You winced and groaned as the ravenous pucker clenched around you, drawing you and Kim another few inches into its warm, slimy embrace. Just like before the huge butt was steadily swallowing you up. But this time you had the nervous whining of your sister joined in. In spite of her being plunged to the hilt inside your rear you couldn't resist acting a little glib about it. "Heh, first time?" You teased, comforting her in a strange way. It dawned on Kim that little Willy had indeed been put in similar positions several times now, and he was fine. It wasn't long before the ravenous ring had done its job and consumed the both of you. Without some external assistance you were now helplessly trapped inside. The smell was horrendous as ever and there being two of you instead of one made the tunnel feel a lot more cramped this time around. Squishy walls squeezed and undulated, attempting to draw you in deeper with limited effect. More disturbing was that every squeeze was starting to mimic Kim's thrusts from earlier, pushing Big Willy in as deep as it could go.

"Hehe, looks like Becky wants me to continue having fun too." Kim remarks, trying to regain her composure. She tried to join in the rhythmic squeezes, but there isn't much she can add that the pressure isn't taking care of already. You could feel Big Willy edging closer to another climax and after a few more overbearing squeezes a lewd moan escaped Kim as she blew her load deep into your bowels. Whatever aches are present seem distant and irrelevant compared to the heavy pressure delivered by your surroundings.