Strip off and get on

This is perverted! But exciting. You can feel yourself starting to get wet. Better get out of those panties before they get soaked then. And everything else may as well come off too!

A minute later and you're standing naked in the room. That bench looks so tempting. You lie down on it, slowly. It's cushioned slightly, and reasonably comfy against your back. Scooching down, your line your ass up with the hole, and slowly place your feet into the smaller ones. They slip in easily, and then suddenly you feel something tighten around them. Some kind of strap? You try to wriggle your way free but your feet are stuck tight.

*snick*

You feel something tighten around your chest. Another strap. You're tied down now.

*whirr*

The bench starts to move you into the large hole like some kind of sick MRI machine. You can feel your ass pressing against some kind of rubber sheet. The pressure builds, and then it gives way, cool air washing over your cheeks and genitals. It feels like the machine is about to take you into another room ass first. But then it stops as suddenly as it started. You're now half in, half out of this wall. Your legs are tied up, held above you and **** over your chest. You feel like your ass is being presented, the way your body is contorted. Then you feel something on your bare cheek. A hand, it feels like. That means you're not inside the wall, you're sticking through it. And that there's people on the other side. Oh god, who, how many? They can all see your ass, your pussy, still wet and dripping. And nothing else. You're tied up like a toy for them.

The hand squeezes you.