Jake's whole life was changed by Dr Blum. He'd begun to work for her under the table (both literally and figuratively), and even gave up his apartment to live in the basement of her office. As it turned out, Charlotte had a room down there too, and it became her life's work to terrorize him. Dr Blum allowed her free use of his body at all times, and she abused that privilege. While he enjoyed the exhaustingly frequent sex, she interpreted the rule beyond that. Whenever he let his guard down, whether it was turning a corner, filing papers in the office, or even sleeping, she would find ways to hurt him. Her acts of terror included sucker punching his face and balls, shoving things up his ass, biting his cock with the force of a shark, lashing him with a whip, slamming her ass onto his face, and on one occasion pissing right onto his face in his sleep. Without fail when Jake saw the smirk and cackle on the pretty face of this sexy but evil green haired monster, he'd go right to rage fucking her, which was probably her plan all along.
The good Doctor herself didn't go easy on him either. She dedicated very little time in her day to seeing actual patients, and instead would fill half of her work hours with riding Jake's unnaturally enlarged cock until his balls were drained and then smothering him with the mess. Then, she'd amuse herself with torture and the odd medical experiement, and on this day, she apparently had one that excited her. He entered her examination room at 11 AM, when he was penciled in for her schedule and wordlessly stripped off his scrubs. A pit grew in his throat and his balls clenched as he saw an operating table along with lights and equipment. Charlotte was standing submissively at attention behind Dr Blum to assist in the experiment.
Even with the daunting fear of what new hell he was in for, Jake couldn't help but get drawn into the doctor's beauty, with her breasts pushing the limits of her blouse and thick, porcelain thighs barely covered by her short skirt. Whatever today entailed, this incredible woman was worth it. Her lovely freckled face made an excited smile and from plump lips she spoke, "no need for that look, we've got something incredible planned for today. Lie down won't you?"
Jake did as he was told. By conditioning, and the sensitivity the serum gave him, his enormous cock already stood at full attention, awaiting commands. Dr Blum pulled two slicky white pads with little round pieces of plastic attached to them from her tools, and stuck them to his temples, then did the same for herself and Charlotte. Jake began to feel strange sensations throughout his body, including a warm wet tingle on his crotch.
"Fascinating," Dr Blum exclaimed. "So it's true. A colleague of mine overseas has made an incredible breakthrough. She has developed this device we're all experiencing now. What you're feeling is the physical sensations of both Charlotte and myself. Allow me to demonstrate." She then nodded to Charlotte who got to her knees and began to eat the doctor's pussy. Jake shuddered. He felt it, and it was amazing, yet strange. He felt the sensitive nerve endings of Dr Blum's clit explode at being licked, while also feeling the familiar act of eating her out. He understood why she loved this feeling so much, and felt a unique technique Charlotte was doing that he would be sure to try himself.
"Feel free to masturbate, just don't cum," the doctor told him. He obeyed, and it only intensified the sensation. He felt the simultaneous joys of jacking off and having a whole new genital stimulated. Dr Blum moaned louder than usual, as she grabbed Charlotte's green hair and pressed it into her mound forcefully. Over time he felt a hot churning inside of him as his pleasure built. He was approaching a dangerous point in his masturbation and removed his hand. However, the clitoral pleasure continued, and despite his best efforts, as he felt the symphony of Dr Blum's orgasm, with the utter release of squirting and being squirted on, a blast of cum erupted from him, landing on his chest.
POW. A powerful slam on his balls from a baton, and then hits against his cock that threatened to snap it in half. He looked down to his bruised and battered package and saw Charlotte whimpering in the fetal position. "Marvelous," Dr Blum said. "You see the magnificent thing about this device is that it works both ways, and is customizable. So for our purposes, all of your pleasurable sensations are mirrored in me, while Ms Charlotte here is receiving your painful sensations. How did you like that, dear Charlotte?"
Charlotte struggled to catch her breath. "It was horrible."
"Horrible? But that's how you've been treating our poor Jake day after day. How bad could it be? Here, give him your usual sadistic torture."
Charlotte approached hesitantly, then raised a shaking hand and slapped his balls. Even a little slap caused gut wrenching pain, especially on bruised and swollen balls.
"Why that's odd, I was under the impression you went much harder on him. Why, you wouldn't go easy just because there are consequences for you, would you? Tell me Jake, is she going easy?" He looked at Charlotte staring daggers at him, and thought of her sheer sadism these last few weeks.
"Yes, Doctor. She's usually much harsher," he admitted gleefully.
Dr Blum made a series of 'tisks' as she bent Charlotte over the table, ass up with her face pressed into Jake's dick and balls. Jake tried to swat away whatever was touching his face before he realized it was his own dick. Dr Blum grabbed something from her tools and then Jake felt electric pain burning sensitive nerve endings. She'd apparently grabbed a taser, and punished Charlotte's clit with it. The two of them convulsed and had the wind knocked out of them until the doctor pulled away.
"Now dear. Show me what you really do to him." Charlotte gritted her teeth, fighting tears, then slapped Jake across the face with all her might, then punched his balls without concern, letting out a groan of anguish. Then she bit the sensitive area under his head, and grinded her teeth on his foreskin, as a single tear fell down her face. Throughout this pain, Jake felt an oasis of pleasure, as Dr Blum squeezed her own plump breast and masturbated with a vibrator. This beautiful focal point gave Jake the strength to bear the torment.
Charlotte looked back to Dr Blum, hoping for relief, but got a sternly shaken head in response. Charlotte grabbed the nearby baton and shoved it up Jake's unlubed ass, screaming as she did. She twisted his nipples, drawing a drop of blood, and yanked the baton out of his ass and beat his cock and balls with it. Neither could continue anymore, and the two of them begged for mercy.
"Alright, I suppose you've had enough. Now usually when this happens, you take all that rage and you fuck Charlotte as hard as a bull right? With the state of your poor, beaten penis, would sex hurt?"
"Yes Doctor," Jake said, "but it's worth it. It hurts, and it feels good."
"Good. I get all the pleasure, she gets all the pain. It's time for your hard revenge sex." Charlotte gave a half smile, as she still always liked this part. "-on me. Fuck me like you fuck Charlotte. Fuck me with anger." Charlotte dropped her eyebrows and opened her mouth in disappointment.
