I pulled into a rest stop just before the state line. The gas tank was almost empty and my bladder was almost full. I parked at the pump and held out my credit card toward Elysa.
"I gotta pee. Want to fill up the tank?"
She glanced down, "Like this?" She asked.
Somehow it had slipped my mind that she wasn't wearing anything but a sweater. But the thought piqued my imagination, and her face suggested she was ready.
"Like that." I nodded.
She nervously stretched her sweater as low as it would go, barely two inches below her crotch. "Okay," she agreed, "but only if you stay and watch."
"I can hold it if you put on a show." I said. I'd be a fool not to watch.
She stepped cautiously out of the car and slowly crept around to the gas pump. A sliver of her bare buns peeked out beneath her shirt. She surveyed the scene, her hands nervously tugging at her single piece of clothing. The rest stop wasn't too crowded, but far from empty. Everyone appeared too hurried or too focused on other tasks to notice the bottomless girl sneaking around the lot. She let go of her shirt to unscrew the gas cap and the persistent breeze caught the loose fabric. I watched her in the side mirror. She caught my eye in the reflection and lifted her shirt for a brief second, flashing a cute smile and her bare crotch at me.
Soon she was playfully exposing herself; bending over, straddling the pump nozzle, letting the wind catch her sweater. Surely enough, a few people gave a second, or third glance her way, but luckily no one did anything more than inconspicuously stare.
The tank full, Elysa strutted up to my driver's side window and leaned in, resting her elbows on the door.
"That was fun." she said, handing back my card and planting a kiss on my cheek. She leaned over me, baring her hips and lower back to the world as she stretched to grab her small purse. "I'm gonna go to the ladies room."
"Like that?" I echoed.
"Like this." She stood up and pressed her body into the open window, lifting her shirt up to her belly button. I ran my fingers across the fine black hairs on her crotch and she inhaled with a shudder.
"Have fun." I said, pinching the mound just above her clit and sending another shudder through her.
I watched her step across the lot toward the bathrooms. Now people were starting to notice. Nearly every head turned as she passed. Seemingly undeterred, her hips swayed with a slight swagger as she walked on, head high, pretending she wasn't turned on by the attention.
I drove away from the pump, parked in a far corner of the service area and hopped out. I momentarily fantasized about following Elysa into the bathroom, bending her over the sink counter and ramming her from behind; or perhaps pressed against the stall partition with her feet wrapped around my waist. I knew it was far too risky, so instead I made use of the men's room and returned to the car. I stared off at the landscape awaiting her return. Images of the past days replayed in my head, and I grew more and more aroused as the seconds passed.
My phone buzzed, snapping my attention back to reality. We hadn't had a cell signal in so long I forgot my phone was even on. I looked down to see a message from Elysa. I opened it to see a bigger surprise: a picture of her standing in the middle of the restroom, reflected in the mirror. A few people were visible in the background but no one facing her. Her free hand was lifting her shirt up to her hip. She was winking, with a playful smile. A caption read "Hope I don't get caught! ; )"
I was about to put the phone down when it buzzed again.
