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Trucker hours were extensive and driving on these long stretches of road had been practically mind numbing if it weren’t for Optimus. It had been a shock stepping into the Peterbilt and reaching for the wheel only for the radio to chastise her. The disembodied voice had introduced itself as Optimus Prime, thee Optimus Prime.
Everybody knew about the Cybertronians no matter how hard the government tried to keep it a secret. It’s not everyday you see colorful jets flying over highways and self-driving flashy cars attempt to court equally flashy, yet non-sentient, ones. So it was no surprise the government started an ambassador program instead of continuing to try, and fail, at hiding the extraterrestrials.
Optimus Prime was the one of the most popular ambassador mechs, it made sense really, his voice was deep and powerful and sucked whoever was listening in, that’s certainly what happened to her at least. She can remember the first time seeing him on her phone. She was at a rest-stop after hauling for nearly 10 hours and his voice had been almost a soothing balm to her soul. He was…pretty handsome too. All strong but gentle and eyes full of warmth, she’d rather die than admit this but she’s put a few of his speeches on when she felt extra lonely.
But life moved on, humans and cybertronians adapted and the ambassador program was mindbogglingly popular. There were toys of them, hell Dee has a few Optimuses at home, meet and greets, and whatever else can make a shit ton of money for governments. But, sometimes she wished she picked a profession that didn’t have her on the road all the goddamn time, she’d kill to be in the same space as Optimus Prime! So imagine her surprise when she had won the meet and greet of a lifetime.
After the initial fangirl freak out Optimus Prime, (Please Dee, call me Optimus), explained this was akin to a publicity stunt. Truckers have long hours that practically drive them crazy, so let the big strong cybertronians step in to ease some stress from the poor human brains. She wasn’t complaining, but being in his presence was making her sweaty. Fuck, she hopes she doesn’t smell.
Optimus refused to let her drive and encouraged her to try and get some rest but she couldn’t let this opportunity slip by. She fired off question after question that Optimus answered with little annoyance, if anything he seemed happy too. But all good things come to an end when Dee’s bladder starts weighing down on her. If she remembered correctly they were near a rest-stop area, but first she needed to tell Optimus about her…problem.
“Uh—hey Optimus can we stop at the rest-area? I need to take care of some business.” She really had no clue if Cybertronians had any concept of pissing but she’d rather not embarrass herself trying to explain it.
“Business? I do not remember the rest-area being one of our destinations.” God, his voice sent vibrations all throughout the truck’s cabin, it made her shiver. Stay focused Dee! “Ah, it’s like a human thing, Optimus, but it’s kinda…private. I need to do it at the rest-stop.” Despite her best efforts Optimus made no real attempt at changing their destination or even slowing down.
“I apologize, Dee but I’m afraid this shipment is on a tight schedule. It wouldn’t do us any good if it arrived late.” Damn it, she’s almost certain that’s a lie but she forgot all the details of the job after being starstruck. Besides, she doesn’t know if she has the heart to dispute with Optimus Prime. She just hopes she doesn’t piss herself.
Optimus felt guilty for what he was doing to the trucker woman, it wasn’t right for an ambassador mech like. This—this is on par with when he caught his autobots indulging in those human films. It wasn’t right, but Dee had such a strange allure to her and her EM field, like all humans, hid absolutely nothing. He could tell in the beginning she held admiration for him but as the questions died down into comfortable silence he could feel the headyness in her field and he could smell her human pheromones. To the majority of his kind humans were cute, to others they were disgusting, but most agreed they weren’t on par with the attractiveness of other Cybertronians. However, Optimus was not like the rest of his kind.
Optimus had an affinity for humans of…a larger weight class some would say. His go-to answer was that he believed they were the human equivalent of his own frame, it’s not a complete lie but his reasoning is much less pure. Softness is rare for cybertronians, it’s private even. The squish of a protoform is hidden behind the thick walls of someone’s frame only to be revealed between their most trusted. So he was surprised to see just how soft humans were, and how they didn’t hide it. The way their protoforms jiggled and sagged especially in some of those revealing meshes they called “bathing suits” made beaches his favorite destinations by far. However since Optimus rarely had the time to interact, or touch, with humans, it just made it easier to keep his obsession under wraps.
And then he had been put on a long haul with an unfairly beautiful large woman, with an EM field that hid nothing and a smell that drove him crazy.
It didn’t help feeling the way her aft squished against his seat, the weight and warmth of her was something he couldn’t get enough of. He seldom had the chance to feel the way humans felt against his own body but he hoped it didn’t end anytime soon.
If she was Cybertronian he would not have hesitated to court her, but alas she is human, so now she must be at the mercy of his sinful whims. Forgive me Dee, he thought but had no desire to fulfill her need at the rest-stop.
Dee thinks she might kill herself. Optimus had long since passed the rest-stop and her bladder had been screaming at her non-stop, she needs to speak up or someth—Suddenly, Optimus had slammed his breaks hard. She felt a dreadful, but thankfully miniscule, leak of piss hit her underwear. “Forgive me, I had almost hit one of your wildlife. I’d prefer to finish this haul with no casualties.” They were on a long stretch of highway with no one in sight, but it was never a good idea to stop in the middle of the road. Hopefully she can take advantage of what she’s about to do.
“Optimus, pull over to the side of the road we can’t be parked here. And while we're at it I think I'm going to take care of business since we must be good on time now.” He silently pulled to the side but the moment she unbuckled and reached for the door handle it didn’t give. She tried fiddling with the handle in desperation but it didn’t budge. “Optimus, why isn't your door opening? I really need to take care of something, man.”
“I do not know what’s happening either. It seems my doors are locked but I cannot open them.” Please, somebody put Dee out of her misery. She clenched her legs together in fear her bladder would give up. “What do you mean they’re locked? Unlock them!” She kept tugging at the handle as she lost her patience, she’d start kicking at the windows if she didn’t feel like she would burst.
“It appears I’m having a malfunction. Forgive me Dee, perhaps you can take care of your “business” here?” …There was no fucking way Optimus Prime suggested she should piss inside of him, he doesn’t even know what he’s asking of her! “Optimus, it’s gross business uh—it’s bodily fluids, I can’t just do that inside of you! It’s unsanitary.
Oh he’s well aware, shamefully well aware. Optimus would rather offline than admit it but he’s been charged up from what was happening to the human in his cabin. The way she frantically rubbed her legs, which in turn moved her aft against his seat even more, almost had him leaking transfluid on the drive. Of course he felt bad for what he wanted to happen, Dee squealing and wetting herself along with his seat, flooring and if he was lucky enough his dashboard. He could feel the shame burning as he saw Dee frantically pull his door handle. “It’s alright Dee, please do what you have to there’s no shame in it.” So please Dee, please piss all over my cabin, he let that thought go unvoiced.
She could feel her anger and desperation rise at the softness of his voice “There’s no goddamn way i’m going to—“ fuck. Dee could feel her bladder starting to give up the ghost, her shouting certainly didn’t help. A whimper had escaped her throat and she quickly reached down to try and take off her belt. If she was going to piss herself she could at least try and avoid having piss soaked pants for the next however many hours. Throwing all sense of shame to the wind and she shimmied her jeans and panties to the bottom of her legs. If she was in the right state of mind and not in piss fuel desperation she would have been embarrassed having her whole bare ass touch Optimus’ seat.
She felt her pussy pulse once after lowering her pants and then her bladder finally released. It started off slow but she had lifted her feet to lie on the arm rests and the flood gates opened. “Fuck!” Her piss dribbled down the seat and in turn onto the flooring. “Fuck! I’m sooo sorry.” She covered her face as her piss seemed to have no end in sight. She felt wetness on her face that she hoped was tears.
He couldn’t believe this was happening. He wasn’t complaining, obviously, but he never thought he'd be able to see someone like Dee completely let loose. Her valve was so beautiful as it released spurt after spurt of hot piss. He was almost tempted to coo at her for doing such a good job. But then the sorrys came and so did the tears and Optimus can’t tell if he feels ashamed or even more turned on. She was taller and bulky than the average humans he had seen but she was reduced to tears over something natural. He hoped she never figured out it was his own sick desires that caused her to piss all over the most popular ambassador bot’s cabin but he hoped she never stopped.
Dee felt like she’d been pissing forever, the embarrassment must have warped her sense of time, but eventually, her piss tapered off and all she was left with was a piss soaked cabin. She was seriously going to kill herself. Genuinely. She just PISSED all over OPTIMUS PRIME! This level of disrespect could be grounds for a human cybertronian war, god she thinks she’s going to cry again. “Are you feeling better Dee?” His deep kind voice rang throughout her head and chased away the thoughts of an earth ending war. “I assure you, I take no offense, it's a natural issue. It’s my own fault for my system failure.”
She sniffled and and slowly lowered her feet off the arm rest, the motion made leftover piss dribble out of her. She made no attempt to pull her pants up, deciding to succumb to sitting in her own piss. Dee was too drained to care at this point. She slightly rolled down his window, the piss smell was absolutely eye watering, and sighed. “Optimus, please just drive.”