It would have been a pleasant drive in the country. It was a Sunday afternoon. The sun was bright, the breeze was warm and a little moist, and the countryside was empty. They hadn't seen a car along this back road at all, and only two total since they had left the gas station an hour ago. Steph had had to go then, could have asked to use the restroom then, and Greg would have let her. The play would have been different, he would have been disappointed, but he would have let her, and he would have adapted. But she hadn't, and out here in nowhere she was going to have to. They were too far out to make it back to a proper toilet and this is what she wanted, what she hated, what she needed. She took a long pull from her bottle of water.
The Subaru wagon crested the top of the low hill and the road stretched a mile ahead straight to the next hilltop, empty, desolate. There were some trees along the roadside, and the pasture was a little shaggy and brown. There weren't even any cattle or horses in view. It was a good spot, she would have some cover.
"Greg," Steph stammered, shy to start, always shy to start. "I'm sorry, I ... Oh, this is ... I just ..."
"What, Steph." Greg said, pretending not to know. "What's the matter?"
"I just haven't seen any place to stop in a while, and I, well I tried to..."
"Oh, you need a restroom?" Greg laughed, a little smug, a little playful. "You're right, you're kind of out of luck. Can you hold it for a bit, I'll try and find you a place."
Steph squirmed in her seat. He wasn't going to suggest they pull over and find a private hedge, he was going to make her make the move, humiliate herself. That was part of it for him, part of his enjoyment. Steph moaned a little and tried to relax the grip on her bladder. Just a little, just enough to make a wet spot, but it wouldn't go. She squirmed some more.
"I can try, honey." She said, through gritted teeth. "But, it'd better be soon."
Greg snorted and stared ahead out at the road. Steph grunted and squirmed in her seat, playing it up a little. Her need, her agony, her desperation was all that existed in the car, in their world. They reached the bottom of the little valley and began climbing to the top of the next hill. Steph took another swallow from her water bottle, knowing that will only make it worse, but she needed to just wet, just get it over with, get it started.
Greg turned down the air conditioning, letting the sun and the day get into the car. They reached the top of the hill and a thin film of sweat formed on her brow. The road continued on, no break, no traffic, no civilization. The trees fell away and the top of the next hill there was no cover at all. They drove down into the little valley.
Sweat trickled down between her breasts, and from her hair down the back of her neck. Her t-shirt started to get clammy and stick to her, to the seat. Her pierced nipples shone through the thin fabric and hardened up with anticipation. She felt a spasm in her bladder and let out a moan. Greg chuckled.
"I don't know, Steph." He crooned. "Not seeing much of anything up ahead. You gonna be ok?"
Steph doubled up, panting waves of pressure pulsing through her. She couldn't keep still, but the moving made it worse too. She shook her head, unable to speak. The effort of holding on vied with the effort to let go. Greg glanced over at her and the car drifted toward the shoulder. They hit a bump and the car bounced.
Steph's piss flooded into her lap, splashed out in a burst. She groaned and sighed, relishing in the relief for a moment, before clamping down, feeling the warm soothing spread along her thighs and ass. It cooled quickly, leaving her feeling soggy and foul. She sobbed.
"Oh, Greg." She cried. "I'm sorry, I've made a mess, pull over, please. I'm sorry."
Greg sighed and coasted to a stop at the top of the hill. He turned off the engine, and got out. Steph was doubled over, with the momentary pressure relief gone she was still in agony, and afraid to move lest she make it worse. She heard Greg open the hatchback, and rummage around a bit. He walked up beside her and opened her door.
"C'mon, get out." he said, grabbing her hair and pulling her. "I guess I'm going to have to show you how to behave."
Another trickle escaped, re-warming her pissy spot, and he dragged her to the back of the car. He had her collar and manacles ready, and had her locked in with her wrists clipped behind her neck before she was even aware of her surroundings. With a gentle shove, she stumbled back away from the car.
"Such a nasty little girl, Steph" He crooned "Wet your pants like a schoolgirl. Is that what you want?"
Steph shook her head, forcefully. The tears on her cheeks shook off in a spray. Greg pulled out his pocket knife and came at her.