FUCK, This was a disaster! Was she gonna tell Mom? I decided to hot foot out of the house returning a couple of hours later.I decided to shower and o...ce there remembered that moment I had seen my sister masturbating in her room. My dick got hard at the littlest gust of wind so naturally I had a boner again! I was working it when I realised that i had company. "Having a good tug there"? It was Lilly."You dirty little fucking slime" She said. "How long have you been watching me"? "What else have. With my violent entry into her ass my mom screamed with pain.As I lay on top of her, savoring the new and wonderful sensation of having my cock in my mothers ass, I suddenly realized that she was crying. I knew I was hurting her, I knew what I was doing was ****, I knew I should stop. But as I slowly started slidding my cock in and out I knew that I wouldn't stop. Not until I had filled my mothers ass with my hot cum.As I lay on top of her, slowly slidding in and out, trying to make it last. I hoped it was true because I didn’t feel like walking in the heat. Suddenly, I saw a figure walking on the right side of the road, and I slowed down a little. The person had their thumb out, but I had no intention of picking up a hitchhiker. When you are a serial killer you try to avoid people, except the ones you are going to kill of course. I slowed down more and past the figure doing maybe forty miles an hour. As I did, I looked over and the person looked at me. It was a woman, well, a. So I booked us a trip to Punta Cana, we had been twice before and we both loved it. We sent the k**s to grandma's for the week, and left for the Hard Rock Punta Cana, just the two of us.The first couple of days were pretty uneventful, us drinking by the pool in the morning and afternoon, dinner at night, followed by some dancing and sex back in the room. The sex was ok, but you could still tell there was something missing, the third night I had the big dildo out and I was going to town on her.