They were not sisters but best friends. I was fondling her breasts over clothes. She told me she was a virgin and I could have sex with her, with some...string attached with it. I surprisingly asked what that was? She said, she would explain it on time. Mila asked us to come inside to change, she would go to the balcony.Nila went to the bathroom to change and I was doing it in the room. Nila was done before me. I was in my underware, she came out of the bathroom and grabbed my half erect dick and. He dipped his head and brushed his lips over mine, then grasped my hands and held them above my head. He tied the rope around my wrists, pulling them tight and then he attached the rope to the bedframe.I pulled against the constraint and asked him, “Do you know what you’re doing?”He brushed his lips over mine again and said, “Yes. Do you trust me?”I nodded. Of course I trusted him.He pulled the rest of my dress down my body, the silky fabric running over my skin as he pulled it off and tossed. "Shecan't leave me here!" I started to cry, I had looked forward to being ableto stretch my legs and relieve my bladder. It was 4:13 a.m. I got control of myself and began to look around at my surroundings. Whatif someone should park near me? I'm bound to my steering wheel, gagged, wearingwomen's panties and my cock hanging out for all to see; what a sight I wouldbe. Just then a state trooper's car pulled into the lot and slowly cruisedby me. I put my head down as far as it would go and. I really got into working on the massive head of this black anaconda as I felt the car stopping razing up looking around I realized we were in the park in a nice secluded parking place. So I got back to work sucking and licking his pride like a big ice cream cone really getting into my task of draining his big balls. He pulled it from my sucking mouth pushed me back in the seat as he removed his shorts shaking his now free monster at me saying take your time bitch you have got all day so just.