Maybe "playing" meaning something different to her...?

You take a deep breath in and then release all the air from your mouth. “Sure, we can play, but then you have to let me and my friend go. I promise you my people, nor we will return.”

The girl grins. “I’m glad you said that because if you had anything else, I would have killed you just now!”

An awkward laugh comes out of your lungs. “Oh, well…Yeah, I wouldn’t have wanted that.”

She puckers her lips and taps her fingers on her cheeks while she stares at you as she decides what to do. Then, after just a couple of seconds, she snaps her fingers.

“We should start by exchanging names!” She giggles, finding this idea of hers amusing apparently. “My name is Sadie!”

Sadie shoots her lower right arm out to shake your hand. When you don’t move, she sighs and drops her hand. “You people have no sense of manners these days. You disgust me.”

She takes you and shoots a web from her index finger to the ceiling and flips you upside down, lifting you suspended from. You sway back and forth until she steadies you.

You hadn’t noticed her attire before, but as you stared into her thighs, you realized she was wearing a short black skirt, giving you an unintentional tease of her private parts. You look down (up?) and see her a matching color crop top T-shirt; you see her belly button and core. Her breast size is as prominent as Clova’s, perhaps a touch bigger.

All four of her arms move in action, cutting the web from that was covering your lower torso. You cough, stammer, and try to move, but you’re strapped in.

“Oh, when I said I played with my brothers, I definitely mean we fucked our brains out constantly. There wasn’t a whole lot we could do looking like this. Plus, incest is kind of in our DNA.”

You wondered if she knew what the word ironic meant.

Sadie sighed longingly. “I’ve never been with another man since I left the nest. I hope you live up to the standards…”

You can’t reply to that. Where would you start? What could you follow up with? You hung where you were and looked at the ground above you, and sighed. This is going to be the weirdest thing that has ever happened to you…

The thought process has just enough time to enter and leave your mind before your cock is out in the cave’s open air. You hear Sadie gasp and then exclaim. “Wow! You’re like, a lot bigger than any of my brothers!”

“Thanks,” you try glancing up, but instead, you see up Sadie’s skirt. No panties. You gulp and then become lazy. It’s hopeless trying to do anything because of what position you’re stuck in. Not that you start complaining.

Sadie rolls her smaller-than-usual tongue over your penis glands. You jolt in surprise and gasp. Then, she steadily rides her tongue over your shaft before she begins to consume you. The sensation that follows confuses you, but you know you like it…

You close your eyes and focus on Sadie’s sucking. The flow of blood seems to even out as your cock becomes rock hard. Sadie can’t get enough of you, it seems, because she doesn’t ever pull away or breath; she just bobs and suggestively gnaws after every couple of passes.

Spit falls near your face while she takes your dick into her mouth, and she begins to moan, holding your web cocoon to give you a spectacular blowjob.

A vice-like grip is formed with her lips, increasing the bliss of each of her passes. You’d give almost anything to reach out and grab her legs, but instead, all you’re limited to is restricted moving and pathetic moans. Your dick flexes and pokes against her organic walls, which makes her moan too. It’s obvious no one else (her brothers) had anything close to something of this size. That doesn’t damper her mood, however! She sucks the tip and grabs the base to stroke and stimulate. A shudder parts from your lips and you try throwing your hips in, but your attempt is met with mediocre results, so you let Sadie continue unbothered.

“Mm~mmf~mm~ Schk~!”

All of Sadie’s noises are either muffled or wet or a mix of both. They all bounce from the cave’s solid walls. It almost sounds like the room is filled with horny spider-girls, watching Sadie suck you off as you stay upside down, getting your cock consumed and sexually worked.

With a loud pop, she breaks away from her oral stimulation and begins jerking you off. “Time for something different. Suggestions?”

The steady rate at which she beats you makes you wonder if you just ask her to continue this upside-down blowjob.