All characters in this story are 18+
I had to tell Laura what my father had done to me. I think she might have worked it out anyway from reading his notes while I slept but if she was going to get revenge, she needed to know where to start. It took a while for me to get the words out but after I told her everything, she was there to comfort me and to reassure me. Then she told me her plan.
Laura had read my fathers entire notebook and not once did she see any reference to what the drug did to men, but it did reference that the drug was formulated for couples so we felt pretty secure in the knowledge it would do something to men. If we could dose my father and then the boys, we could make them feel exactly what they had put us through. I tried to argue that we should just go to the police but Laura didn't think they'd believe us and the thought of a more direct form of justice appealed to us both. My father had ruined my life, it seemed only fair that I should get to ruin his.
In the morning we walked to mine and saw that my fathers car was still missing. Exactly what we wanted. We walked into the house and went straight to the fridge. My father was a man who was proud of his health, he worked out every day and drank only bottled spring water. He hated the chemicals they put in tap water. We went to the fridge and dosed every single one of his water bottles in the fridge. We had no way of knowing which bottle he would pick so it made sense to cover our bases. We then went up to my room and hid in my wardrobe. Several hours passed before we heard the front door open. I heard my father call out to see if I was home and then like clockwork make his way to the fridge. It was hard to hear where he went from there but we knew he hadn't come upstairs. A few minutes passed and then we heard the sound of grunting from the front room which seemed to slowly be gaining in volume. We had him. Now time to reveal ourselves.
Part of Laura's plan was to not only dose my father but to torment him as well, which meant that before he had got home we had got changed. We were both dressed in our school uniforms, but our uniforms from a couple years prior. Our shirts were too tight, Lauras was held shut by only two buttons and our skirts barely covered our bums. We were both wearing thigh high socks with our hair tied back into innocent looking ponytails. I had felt uncomfortable about the idea of dressing this way in front of my father but knowing how much it would kill him to have salvation within reach but not be able to achieve it made me swallow my misgivings. When we walked into the front room my father was sweaty and naked and tugging away at his big cock. Revulsion ran through me as I remembered how incredible that cock had felt as it split my pussy open. He looked up at us and his eyes looked glazed. It was like he was possessed. Laura looked down at him and laughed.
'Hello sir, you look like you could use a hand.' she laughed as she stood over his helpless body. He couldn't stop tugging away at himself.
'Please, girls, help me.' my father responded in a strangled voice
'What do you think Emily, should we help him?'
'That's a very good question Laura. What would even help him?'
'Well when it was us it had to be a creampie. Surely it would be the same for him?'
My fathers eyes began to fill with fear.
'Yes, that makes sense to me.'
'Well let's see if we can ring one of our good friends to come and help your poor father.'
'That's a great idea.'
I didn't want to see anyone fucking my dad. Man or woman. But I did want to know that he had been truly humbled. Looking at his naked form on the floor struggling to even make words was causing flashbacks of his body against mine. The horrendous sound of his skin slapping against mine. The twitch of his cock as he filled me with his seed. I needed to see him humiliated as I had been. We made a big show of turning around as Laura pulled her phone out of her bra. We wanted him to feel ignored and powerless. But then there was a small prick in my bum. We both snapped round and saw my father kneeling behind us, a syringe in each hand with the needles sticking out of our ass cheeks. We looked at each other with horror before jumping back and out of his reach, the syringes falling to the floor. They were both empty.
'What did you do!' I shouted at him. Watching in horror as he stood up. Every ounce of desperation had disappeared from my father and once again he stood before me, powerful and confident.
'Now now girls, that was a very mean trick you tried to play on me. I shall have to punish you both for your actions.'
We ran. Sprinting out of the front room even as we both began to feel the effects of the drug begin to take hold we bolted to the front door only to find it locked. My father slowly strolled into view as if he had all the time in the world. I suppose he did. We had no way out of the house, Laura had dropped her phone when we'd ran and my father knew as well as we did that once the drug kicked in we would be putty in his hands. Laura fell to her knees next to me, her skin already shiny with sweat and her hands roaming over her tight young body. I began to sob as I felt the same urge building within me. My father approached me. Sensing that Laura had already succumbed to the drug he simply told her to follow him as he picked me up with no effort and threw me over his shoulder. His heat against mine felt sublime but I wasn't far enough gone to let him know that. Though in my new position I became very aware of how exposed my butt was. My white cotton panties had ridden up between my cheeks and now framed the tight hammock of my pussy perfectly. I wanted to fight my father. To struggle out of his grip and get away but the drug was working too quickly this time and every move I made only sent me further down the rabbit hole of depravity I knew would surely be coming.
My father carried me up the stairs and into his bedroom, throwing me down onto the large queen size four poster bed. I saw Laura obediently crawling behind my father like a puppy. I couldn't believe we had been stupid enough to even try and drug my father. He was smarter than us in every way.
'Now girls, let me tell you some facts. First of all, my study is monitored by me 24/7. I knew that Emily had taken my things the moment it happened. Secondly, the company I work for is immensely powerful and it was trivial for me to monitor Emily's steps from the moment she left this house to the moment she returned. Thirdly, I am immune to my drug. It does nothing to me. Well, nearly nothing. I never managed to work out how to counteract the drug's ability to give me an erection. Essentially girls you have dosed me with a very strong form of viagra, which means this is not going away for some time.' He gestured to his throbbing cock, jutting out proud and true from his body. While he had been talking me and Laura had succumbed entirely to my fathers cruel concoction and were openly masturbating and moaning. Laura seemed to be actually trying to pull my father closer to her in order to find relief. We must have looked like two whores to him. 'I see you girls, would like some relief. All those hormones coursing through your young bodies must be a lot to deal with. Would you like Daddy to make you feel better.' Laura nodded her head enthusiastically as she reached up and grabbed my fathers cock. He swatted her away with ease.
'I will give you what you want but first I want you to give me what I want.'
'Anything Daddy, I'll do anything!' Laura moaned, breathy and raw. It was disgusting to hear Laura refer to my father as Daddy but I knew that her mind was not her own right now. If he hadn't been my father I probably would have said the same thing. In fact, only a few days ago I had made a very similar promise to the same man.
'I'm glad to hear that Laura. I will certainly put your words to the test tonight. Get on the bed with my darling daughter please.'
I watched as Laura scrambled as best she could to join me on the massive bed. I knew where this was going. I knew what my father would do next, and I knew I was powerless to stop it. My hands had buried themselves into my panties and I had one hand plunging mercilessly into my soaking cunt and the other using my own juices to pry open my backdoor. I was lost in the drug and aching for sensation.