She said I guess we will see later huh? He said I guess so. I proceeded to tell Doug how we go about getting together. I explained that we boys shower...then stay naked an sit on the bed until the girls get showered and join us. Doug said we stay naked? I said yep, the best part is the girls come into our room and get on the bed with us and they are naked too. He said totally naked? The girls said yes no clothes at all. Doug said so what is the secret? Kim said you will see later I promise. It. Instead she kept glancing around the room, looking for clues and distracting me with things like: "Aren't you excited about the first day of school?" and "Tell me all about the books you've been reading lately." Like I was going to believe she was interested in that! Right!Little did she know, some of my favorite books and magazines were ones I had dug out of the trash or "borrowed" from her reading room. You could always tell which ones she had tried to hide. The magazine at the bottom of the. Just then my mum and aunty appeared from behind some other rocks grinning. Shocked, I asked, how long have you been there, they replied they had come back about twenty minutes ago and had seen me with my legs over the shoulders. They had decided to not disturb me and to watch my performance, which had been by the way quite a performance. My mum added that she did not realize she had such a slut for a daughter and that wouldnt Chas mind if he found out. I told her I loved sex and that Chas did. Then maybe later back to work. Well I did all that and finished my project a little early, so decided to check out some porn and enjoy some "ME" time. Just as i was about to cum, I got the idea to cum in my briefs. I held off as long as i could and I had a pretty huge load. I only put 1 small fold in them and covered them with a t-shirt. I then went into the bathroom and left the door open a crack and waited. Sure enough, she was in there like clockwork. She picked up the shirt and put it in.