She had been the one who kept trying and now she was sitting on my cock squeezing it as hard as she could with her pussy just to keep it from moving. I was still at full erection but the unintended fucking and the squeezing of her pussy were doing nothing for calming me. In fact I started to feel myself building up again as the drive continued. Despite her best efforts we still had grinding and a bit of up and down movement just from the crowded car and the road. After several minutes Nena was getting tired and her vice grip started to slip for moments and then we would have all kinds of movement. Although small I am sure when you are trying not to move at all even the smallest movements feel huge. In these momentary lapses in grip I would get spikes in pleasure and panic. I was building up again and was going to cum in her again. The second time would be worse because this one would be driven completely by fucking my sister not an accident. It must have been during one of these lapses in my sister's grip when she started getting pleasure too. Although not intended on her part either. She fought with herself to keep from cumming as well. She tried to hold us locked in place as best she could but just could not keep the pressure up long enough to stave off the inevitable. Then we hit the hills. We did not see them coming and honestly we had both forgotten about them with our minds on trying not to cum into each other and all. The first hill when we it hit gave every one in the car a surprise except for the ones up front who saw it coming. For Nena and I though it japanese was a whole different experience. Have you ever had kitchen butterfly's in your stomach when having sex? Probably not but I will tell you it is amazing and terrifying. That first hill gave us two full length strokes we could not have stopped even if we wanted to. I know this because we did try stopping the strokes. My sister tensed up again and I tried to press groped my self into the seat. It did not help. It was pure pleasure for both of us although neither of us wanted it. The second hill was not a surprise but felt even better then the first. We were now fully fucking because of these hills of joy. There was no stopping it, up and down. I was getting dangerously close to cumming and there would be no chance of stopping it. Nena it turns out was in the same situation. She had been fighting back her orgasm for a few minutes and these hills were too much. I was about to cum for the second time in my sister's tender womb and I did not know if I should warn her or not. Would it make any difference if she knew I was going to cum or not? After all either way I was not going to be able to stop it. I decided against it figuring she would be too angry. Better to just ride it out. On our last hill I could not hold back any longer and exploded into Nena's pussy for the second time in the last 30 minutes. I am not sure if my second eruption into my sister is what put her over the edge or if she just could not hold back any longer either but she came right after me. I know she had an orgasm and a powerful one because of how she was shacking. While I was pumping wave after wave of cum into her juicy womb I felt her vaginal walls clamp down and start trembling meanwhile her whole body was shivering. I MILF was not the only one who noticed her reaction. I finish my cigarette & blind fold you. I said to answer your question more clearly, We’d study together for tests, though she had a real social life, unlike me. I spent most MILF of my time in the library, since my roommate was such a japanese total jerk. How did you...? I swear, this girl could read minds. “So you really understand them?” Dr. Lawrence asked. At no point did any of the girls eyes leave me. I shook my head and held up my hands signaling 'what more'? “An aura,” I groaned. I took a deep breath and went back into the room. So here it is Tuesday morning and lastnite we were laying in bed and she wanted me to fuck her laying down in doggy. “Sir, I hope what you are doing is right. I tell them that we need to get cleaned up and Daisy says she wants to go to sleep I tell her after our guess leave. Emily slowly traced her fingers through the cum on my belly and pulled the sheet down. kitchen Her fist moved erotically on Jeremy's cock, making sure he stayed good and hard. But she just smiled at it and placed her warm, furred cheek against it, her soft body settling between my thighs as she got comfortable. It pushed back of him as he slowly thrust, but in a jerky motion the tip disappeared inside the ring of her ass, eliciting a sharp whimper from her. Mala was enchanted to see his cum spraying out of his cock and landing on her body. I said I really need to run, but you will hear from me Mrs. Herbert, Pamila Herbert. She is just in her green undergarments now and is smoking groped hot too,' I thought, checking her out. She crept silently through the darkened locker room towards the gym itself. As we take our seats, which fortunately just happened to be right next to each other, I hear a bunch of people start whispering.