Elena looked different the next morning. Her long wavy blonde hair curled around her face and on to the shoulders of her woven white top. Her beautiful big brown eyes that didn't need make up looked amazing with it. Her full lips tried to pout, tried to look cool, but they kept slipping into a grin.
She had had a wonderful evening with Tom. They had kissed and she was hoping that they were now a thing. Even better, she didn't have to wait for him to call her. She had the whole day with him, and with a little teasing, she was all but guaranteed his full and undivided attention.
"You look nice," Tom smiled.
Yes, he had noticed.
"Your hair looks different..."
Elena squeezed her pencil nervously. Maybe she had overdone it? But then maybe she should actually brush her hair more often!
"Get in the cage." She needed to click that lock shut before his eyes could seduce her.
Tom obediently climbed into the open cage, but he was smiling as he watched her.
"Cute dance, El," he called.
Elena shot him back an embarrassed glance. She hadn't even realised that her hips were moving to the song in her head. But with Tom only seconds away from being locked in, she bravely treated him to another slow and surprisingly sexual move as she strutted over to the cage.
The same worn blue jeans towered above Tom's keyed up body as Elena leaned forward to unbutton her test subject's blue shirt. Her free hanging hair dropped down in front of her face and stuck to her new lip gloss. 'Look cool El,' she chastised.
"I have to wire you up," she replied breezily in response to his questioning look. Her hands were on his body and starting to tremble
"Are you going to measure everything?" he asked.
"Aha..."
"It doesn't seem fair that you know so much about me and I know so little about you."
His hand gently brushed across Elena's thigh, soaking in the warmth of the soft denim as he ventured around to her tight round butt. Elena's eyes blinked and her face reddened. Why did she feel so shy? Why couldn't she be like her tarty sister and jump on the cage and fuck him?
With her body heat building, she instinctively reached for the lid and pushed down. Tom quickly withdrew his hand and placed it back in the cage between the allocated bars. A second later, the heavy lid thudded home, and with heavy steel now encircling his wrist, any chance of touching her was gone.
Elena swung her hips until her jeans came to rest on the cage. Tom's bare chest looked so sexy and her hands seemed obsessed with finding a way to touch him through the bars. Damn, why had she locked him in so quickly without any foreplay. The bars made it so hard to reach him.
"I'm not sure I can survive the day in here," Tom sighed, his erect cock caught up in his boxer shorts.
"You said you would help me," Elena replied slowly, still dealing with her infatuation.
Tom was breathing hard as he struggled to move inside the cage. When he finally stopped from exhaustion, he gazed up at his captor, "It's just that I can't stop thinking about last night."
"It was lovely, wasn't it," Elena beamed, her full glossy lips finally free to grin. She stepped closer, her legs as open as she dared and her hands on her hips.
"Wow, Ellie!" Tom mouthed.
She looked away and grinned, "It's all for the science, Tommy."
"Do you still have the code to unlock me?" Tom panted.
That triggered another smile on her shy lips and another roll of the hips. He hadn't forgotten that the only code to unlock the cage was written across her bottom.
"Can I look?" Tom asked.
"No!" she giggled. 'Be cool El,' she mouthed to herself.
Tom tried to move, his aroused body pushing up against the indomitable bars.
Elena rolled her big brown eyes and long lashes, "Would you like me to sit on you while I work?"
"Yes please," Tom begged.
Elena turned and treated Tom to one more dance move before picking up her laptop and plonking herself down on the bars above his face.
*
As ever, Elena was soon lost in her work, fascinated by how Tom's captive body was reacting to sexual stimulation. It was different to the typical male arousal reaction, perhaps because he was trapped in the cage and therefore subservient to his sexual mate. She giggled to herself; in this experiment, she was his mate! Her face blushed with excitement and her bottom wriggled on the bars as she tried to disperse her pent-up energy.
The signs showed Tom's body preparing for sexual intercourse, but yet his muscles were relaxed and his breathing slower as he waited for his mate to impose herself on him. Elena smiled as she again typed the word 'mate'. Despite her age, she was a giggling teenager at heart.
She looked down at her old worn jeans. There were some rips, but they had come from too much time on her hips as opposed to any sense of fashion. She rubbed at a small stain on the pale blue denim and was then worried that her jeans weren't as clean as they should be given how close they were to Tom's face. She moved her laptop, opened her legs and peeped down at his gorgeous eyes. No, it was too much to take and she quickly snapped her thighs closed.
*
"Now Tommy," Elena sighed, "Don't get any ideas, but I want to measure your..."
"My cock?" Tom smiled.
"Yes, your umm..."
Elena exhaled slowly as she reached through the heavy bars to unbutton Tom's trousers and pull out his genitals. Unable to move a muscle, Tom could only lay there as Elena wrapped her hand around his balls and squeezed.
"I'm going to measure sexual stimulation with this tube that has a pressure sensor in the tip," Elena announced.
"What?" Tom exclaimed, "Isn't that a chastity cage?"
It was, but in Elena's practical mind it was just a conveniently sized tube that could be attached to her subject's penis.
"Are you going to lock it?" Tom asked.
"I wasn't... but given your reaction, maybe I should?"
Elena jumped up and reached into her handbag to pull out the small padlock that she used to secure her suitcase, "The key's not here, but at least the lock is open..."
"El?"
"Wow, look at that reaction... that's similar to the spike when I sat on the cage."
Tom looked genuinely afraid as his friend reached through the bars and used lubricant to ease the cock ring over his genitals and then squeezed his cock down into the cage and padlocked it in place.
Elena perched on the edge of the cage, one cheek resting on the bars and the other hanging off the edge with her leg stretched such that the tight denim formed a crease between her bottom and the back of her thigh. Tom knew he had to stop noticing such details, especially now that his penis was crush into its own cage.
Elena hummed to herself, her analytical mind still not aware of what a powerfully sexual punishment she had just imposed on Tom. To her it was simply a means of understanding the science and she nodded approvingly as she picked up her phone to check the readings.
"Your phone shows if I'm aroused?" Tom exclaimed.
