Polyjuice potion and the squib part 5 brittney joins in - Sex Stories

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Polyjuice potion and the squib part 5 brittney joins in

Date: 2/3/2016, Categories: Fiction, Body modification, First Time, Teen Male/Teen Female, Transgendered, Author: iNtUrE, Rating: 82.8, Source: sexstories.com

Part 5 of the series so far. Please read previous chapters for background. Enjoy. ***************************************************************************** *****Polyjuice Potion and the squib chapter 5 Brittney Joins In******* ***************************************************************************** It was a week or two later before my next sexual experience opportunity presented itself. Mum and Brittney had been home for nearly 2 weeks and Brittney was home for the holidays. I had stayed home while she went shopping with her friends. I decided to make use of my time beating off to my movies I had made of sarah on my PC. What happened next caught me completely off guard... I was right in the middle of a scene where sarah and I were having sex, Headphones on, Meat in hand, giving it a good hammer. I was humping the heck out of Sarah on the monitor and was almost ready to cum when I saw a movement in my peripheral vision. I stopped the video and whirled around to see Brittney standing in the doorway to my room, her face aghast... I ripped the headphones off to hear what she was obviously about to say. "What the hell are you watching?"she demanded, brusquely. "And will you cover yourself, PLEASE!" I tried to collect myself. I popped my penis back into my trousers and pondered how long she had been standing there for and how much she had seen. "Don't you ever remember to knock? I was doing something private. Its quite normal actually." I responded, matter of factly. ... "With Sarah? How is that normal. you are sick, Mark. SICK." she responded. "Its not what you think." I replied. "How is it not what i think it is mark? you and Sarah were having sex. She's your cousin mark! thats Incest! Not to mention Wrong and disgusting!" she responded. "OK, Sarah and I were having sex but its not that simple." I replied. "Not that simple? I can see with my own eyes, mark. you had your penis inside Sarah. Wait until aunty finds out about this!" she responded. "Please. Look you cant tell Aunty, It would ruin her. And like I said, it's not that simple." I replied. "Well if you think I saw different, then tell me what I saw then, because I am sure of what I seen and it didn't look good, Mark." she replied. "OK. Well let me start at the beginning. It all has to do with the project I have been working on while you were away. I have been doing schoolwork, just not the kind that comes from my own school. I've been doing magic." I reply. "You've been doing magic? Mark, you are a squib. There isn't a magical bone in your body!" she retorted. "I know that sis. But I found a type of magic that i could have a go at. Potions. It is the only thing magic school teaches that doesn't require magic or a wand." i reply. "Potions? You've been doing potions? Well, well done Mark. But how does that explain what you and sarah were doing on the computer screen?"she replied. "Well, we took some of the potion I brewed - " i started to say but she interrupted. "What potion did you brew? ...