As I sat down I saw Mom beckoning Paco to her. Mom laid on her back and Paco applied the oil to her body. While I watched him turning her on, I was ha...py that Mom and Dad had an open relationship. This relieved me from informing on her when she had some extramarital cock.Mom's hand took hold of Paco's cock and stroked it as he rubbed oil into her tanned skin. Grandma rolled over and watched her daughter as she jacked on Paco's cock.I opened a safe on the bridge and took out a high-end video. That sinking stomach feeling came over me as she ran to her room and slammed the door.Well, I figured she would tell, so I cleaned up in a hurry and went to see if she was calling her Mom but when I peeked through the key hole, she wasn't at the phone, looking around the room I could see her feet and spread legs on the bed moving around. I thought, guess I'm off the hook but continued to watch and it didn't take long for me to figure out she was fingering herself. My dick needed more. Reaching to the nightstand she picked up one of the two large Champagne glasses and held it between her legs.A few short bursts of pee flew from between Karen's legs and splattered into the glass. Katrina reached up and spread the girl's cunt open and licked her lips as a steady stream of hot piss began to flow from Karen's peehole.The glass was quickly filled and Karen stopped her urine flow before it reached the top. She placed the full glass carefully back on the nightstand and turned back. I had never felt like that before, I felt like I was about to bust every time she touched me. I looked out the window to try to take my mind off of the hell she was putting my body through. I couldn’t let her win; I had to keep my composure. There were people all around the park doing what ever the hell it was they were doing. They had no idea of the sexual agony that was taking place inside the truck, but instead of providing a distraction, their presence turned me on even more. What if we get.