Laurie walked carefully down the gravel trail, naked in the moonlight except for a chastity belt and the chains that bound her hands to her waist. She winced, but not from the rocks digging into her bare soles. It was the electro stim taped to her clit that caused the pain. Beneath the chastity belt an electrode was taped tightly to her clit. Another was on the tip of the dildo that the belt held inside her pussy. Every ten seconds, a jolt of electric pain ran from her cervix to her clitoris. When Sean first turned the damn thing on, she could barely keep her knees from buckling, but now, many shocks later, her only reaction was a wince, and occasionally a short, soft grunt.
The dildo was a monster, twelve inches long and pressed very deeply into her by the chastity belt. It was the deepest she'd ever been penetrated, and it felt like the tip was halfway to her throat, rearranging her internal organs with every step she took. She kept going down the path in search of the keys to turn the stim off and get the dildo out. She knew if she failed, Sean wouldn't rescue her until almost dawn, so she kept going down the path, despite the risk of getting caught.
This was the riskiest escapade Sean had put her on yet. Laurie was terrified, but couldn't deny there was excitement too. More than she'd ever felt. Even with the giant dong splitting her in two, she couldn't wait for Sean to fuck her when she was done with the dare. Sex after these dares was always incredible. Laurie felt like she came with every thrust of Sean's cock. Her hands, chained together and padlocked to the D-ring on the front of her chastity belt, pawed at the leather covering her crotch. She wanted to rub herself so badly, wanted to masturbate right there in the cool night air. To cum screaming beneath the moon and the stars.
She whimpered as another shock stabbed her clit. She didn't know how far she'd walked or how long she'd been going. It was hard to measure time when your thoughts were constantly interrupted by intense pain in your most sensitive spot. The bridge must be pretty close though. She hoped it was. She was on the river trail that ran between towns in the valley. It was the old railroad grade, long since abandoned and turned over to the county parks department. The turned it into a bike and jogging path for the public. They probably didn't expect it to be used for what Laurie was doing right now. She hoped there weren't any cameras.
The bridge ran over a small creek, and Sean had told her she would find a key to the padlock on her wrists there. That was her first objective, to get her hands free. She still wouldn't be able to turn off the stim or take off the chastity belt. The stim unit was sealed in a locked box taped to the small of her back. The wires ran under the belt. They jolted her again.
She saw the bridge. Most of the bike path was shielded by trees and bushes on either side, but now she saw that the bridge was in the open, bathed in very bright moonlight. The highway ran not more than twenty yards away, and there was an old dive bar just across the road. Laurie gulped and realized she would be in full view of anyone leaving the bar while she was on the bridge. If they thought to look anyway.
Sean was probably in the parking lot, watching. He'd driven her, naked and bound, stuffed with the dildo, to where the trail crossed West Valley Road. Lifting her out of the car, he set her down on her feet and switched on the stim box. She gasped at the first shock, but Sean just laughed and locked the control box. He pointed her north, gave her ass one hard swat, and sped off leaving her alone with her quest.
She gingerly made her way out onto the bridge. Her skin looked pale in the moonlight. She felt like she was glowing, a beacon drawing anyone's eyes to her naked breasts bouncing softly as she walked. Her breath was very rapid now, and she fought a brief moment of panic when she thought she might hyperventilate. It wouldn't be a good place to pass out.
She was on the bridge and looking along the railing for the key. It would be tied to the railing somewhere. She saw it, glinting in the moonlight. She quickly crossed to it and began fumbling to unlock her hands. Her back was to the highway and the dive bar. She froze as she heard a car door slam. Laurie looked over her shoulder, but couldn't see anyone. There were several cars in the lot. She went back to working on the lock, but froze again when she heard a car engine start. A car was leaving the lot. Her fingers were incredibly clumsy. She was panicking, taking too long. Suddenly headlights swept across the bridge and fixed her in their beam. She looked over her shoulder again and saw a pair of headlights pointed straight at her. Any car leaving the parking lot would be aimed directly at the bridge! "Damn you Sean!" she cursed. He'd planned this part too. She heard a voice, a male voice, yell something. She couldn't tell what it was, but it sounded obscene. Then she heard a wolf-whistle, and quite clearly "Hey, nice ass! Dude! She's naked!"