Moving down the hallway past the changing rooms, Tina suddenly stopped. Through a gap at the side of one where the curtain where it didn't quite reach the wall, she saw two people, embracing.
She opened her mouth to speak up—she didn't necessarily mind girl-on-girl action, but only one person was supposed to be allowed in the room at a time—but then she noticed that one of them was a man, and they weren't just embracing; they were kissing. Passionately. The moving jaws and wobbling heads told of tongues moving in and out, sliding over each other. Intrigued, she kept her silence and just watched through the gap.
His hands were moving all over her body, fondling and stroking her ass, her tits, pinching her nipples where they poked out under the t-shirt, running up and down through the valley of her crotch. Her hands were equally busy, squeezing and stroking a noticeable bulge in the front of his jeans. Tina felt herself getting turned on; she decided to stay where she was, out of sight, and watch what happened.
As long as she remained quiet, they would never know she was there. And today was a slow day; Sundays always were. From her vantage point she could also see the register, and if anyone came up to it she could easily move out from the hallway to take care of them.
Her hand crept to her own groin and started slowly massaging her sweet spot through skirt and panties.
Now she was unbuckling and unzipping his pants; she freed his erection, sat down on the little chair, and took him slowly into her mouth, sliding her lips over the swollen head and gradually swallowing as much of it as she could fit. Tina's hand moved faster, and she felt herself getting wet. This was so much fun, watching...
The girl's head began to move in and out along the length of the rigid cock, leaving a glistening wet surface behind on each pass. From where she was standing, Tina could hear soft slurping sounds.
Oh, that's hot,
she thought. The girl's head moved faster, then faster yet, bobbing in and out in a steady, practiced rhythm; this was evidently not her first rodeo. The boy's eyes were closed and his head tilted back, mouth slightly open, both hands resting atop the girl's head, hips pushing forward to meet her mouth on every intake. It didn't look like his first time, either...
Tina's hand was rubbing back and forth more quickly now, and with greater pressure. She was getting closer to cumming, herself. She glanced again towards the register: nobody there. A drop of wetness escaped her underwear and meandered in a slow path down the inside of her thigh, tickling a little as it went. The tiny sensation turned her on even more.
Then the boy stopped the girl and pulled her upright. He quickly undid her pants and turned her to face the wall; with efficient motion he shimmied her jeans and panties down her legs to her knees, then stepped up behind her and using one hand around his base to guide it began running the mushroom head of his dick along her pussy lips from behind, teasing and stroking but not penetrating.
Oh, this is going to be good,
Tina thought as she watched through half-closed eyes. She was sawing up and down now, running the edge of her flattened hand along her own lips, pushing inward to rub across her clit on each pass. The dress was damp where it came in contact with her juices, which continued flowing freely.
Now the boy pushed forward, sliding into the girl from behind until he was fully seated. Gripping her hips with both hands, he began pumping in and out with enough force to make her push back against the wall to keep from mashing her face. One wrist came down to cover her mouth, attempting to stifle the little gasp-moans that escaped with each thrust.
Tina's own hand quickened in response, pushing inward with her fingers and making quick, savage little circles around and across her clit through her clothes. She was getting close to the edge, herself.
Then the girl in the changing room was cumming, her body quivering; her knees buckled slightly, and had the boy not had a firm grip on her hips she would have slumped to the floor. A low, sustained moan floated to Tina through the intervening space. A few more thrusts, and the boy was cumming, too, his body suddenly still and rigid, his head thrown back.
It was enough for Tina; she orgasmed powerfully, waves of pleasure rushing through her body. She closed her eyes and the world went away for a moment—nothing existed but her own spasming pussy.
When she recovered a little and opened her eyes again, she glanced at the register. Luckily no one had shown up during her moments of inattention. She looked back through the gap into the dressing room; the boy and girl were busy putting themselves together. She watched in astonishment as the girl picked up a top she had taken in to try on and wiped herself with it casually.
That was store merchandise, and she was using it as a washrag! But Tina could say nothing without revealing that she had been watching, so she would remain quiet. Straightening her own clothes—damp, now in the front; she would have to do something to hide that—she walked silently down the hallway past the room and into the store proper.
She walked over to the counter and stood there, letting the last little aftereffects of her climax dissipate. A few minutes later the boy emerged, then a few moments later the girl. They walked past Tina as if nothing was out of the ordinary, and exited the department. Tina waited until they were gone, then went back to the room to retrieve the top.
As she picked it up, she could detect the smell of sex, the salty tang of pussy juice mixed with the slightly chlorine aroma of semen. It turned her on, this physical evidence of what had just transpired there. She decided to hold on to the top, at least for a while, and maybe take it out every now and then during the rest of her shift to inhale that essential odor of unbridled lust. It would certainly make her workday go faster.
She looked up to see Dutch, the store manager, walking into the department. She had been fantasizing a lot about him lately, at night in her bed, her fingers or dildo buried deep in her snatch. He was handsome, and mature, and had nice, big hands and a mouth that made her wonder what it would feel like to have him sucking on her sensitive nipples...
