The wire on the floor should be going to a switch to control a vibrator and switch it betweeen off, low and high...
How about a bondage scene in the rubber suit with a vibrator that comes on and off outside of your control but also a feeding tube that feeds you water. Lots of water. Some time you're going to have to piss. You know you will but try to resist it. The vibrator turns you on but distracts you. It's inevitable. It's happened. You're warm and wet inside. It spreads down your legs and you're worried about the mess maybe but restrained so it's not something you can do anything about. You scratched yourself and the piss - your piss - makes that itch. You can't rub it. It feels worse and concentrates your attention. The vibrator kicks in on full again and you cum involuntarily inside the rubber. You contract and flex like an animal. As you relax the tension in the rubber straightens your limbs but the bondage straps constrain you. Your top opens the mouth of the hood and you feel a warm, moist human tongue enter your world of rubber, piss and spunk. You are claimed.