Margaret was a little older, in her early forties, but the black dress and stockings she was wearing showed she still had a tight slender, 5'1" body. ...Her tits weren't huge but stil firm and pressing at the material stretched over them. She had light brown, shoulder legth hair and full firm lips. She was definitely the most experienced of the three but I could still imagine her on her knees being made to beg for cock.Julie was younger and a little nervous. She was about 5' 1" as well and also. I got the signal, though a bit unclear. I bent down over her almost touching my bulge on her shoulder to make a correction on the statement she was preparing. She was holding the mouse; I put my hand on hers’ and moved the mouse through her mouse. She didn’t try to remove her hand. I gave her few suggestions and asked her to effect them so that I can see them. While pulling back my hand, I brushed on her cheeks. Now the signal was clear and the bulge was uncontrollable. Quickly, I took out my. It was my cell phone. Of all people Rachel. I hit the silent button on the phone. I would have to talk to Rachel later. Peering through the hole to see what my sister was doing. I was hoping that she was still in the bed rubbing her pussy. I was just too hot and bothered to just stop what I was doing right now. She was not in her bed any more. I wonder where she was at. Was I hearing it right that my older sister was getting off on the phone with mom? Was mom telling her what to. Wouldn’t I have to go past the watchman to get out of my building?Fortunately, I would not. There was a small gate in the back compound wall which was always kept locked. It wasn’t too high – just about 4 feet. And it didn’t have spikes on top of it to keep intruders out. Someone athletic like me would have no trouble just climbing and jumping over it. At about 11 pm, I decided to take a short nap before my adventure. I set the alarm for 2:45 am, and went to sleep.Got up when the alarm went.