I just waited for her to go to the bathroom but I couldn’t do anything for 2 days as my parents were at home.On the third day, they went to work and...as my sister went into the bathroom I became super excited and slowly sat beside the door and peeped into it. To my fortunes, I could clearly see my sister opening all her clothes but I cud only see her ass and back as she was facing the other side. So I waited until she finished and then to get the towel she turned and it was the first and the. They agreed so we went in. The boys went into the living room and turned on the TV, I went in the kitchen and got 3 beers out of the fridge and went to sit down. We watched TV and talked until I finished my beer, then I told the boys I was going to go get in the shower after working outside and to help themselves to some more beer. I went to the bathroom, undressed and got in the shower, as I let the water run over me I started thinking about teasing a little more. As I did I was getting wet. Bringing it out, you hold it up so I can see how wet you are. I take the finger into my mouth and suck until there is no trace left of your heady nectar.I release you and drop to my knees behind you to use both hands to pull your cheeks apart so I can examine your most private treasures. Rising to my feet again, I run the edge of my hand back and forth in your slot spreading your ample juices liberally.I take my cock in hand and use the tip of it to scrub back and forth between your lips.. We change positions. Jim is on his knees in front of the desk and I am stretched out so that my chest touches the desk top. My head turned to one side and my palms flat. Roy is behind me grabbing my barre hips with his huge strong hands. Jim's hands grab the back of my thighs as he pulls himself up. Lets get this train going Roy says and at once I feel his cock drive between my ass checks. A second latter I feel my cock slide into Jim's mouth. The combination of pain and pleasure drive me wild..