We had a large basement rec room which easily accommodated everyone. I guess my parents had decided we were old enough to not need full time chaperone... so they just gave us the rules and remained upstairs. The rules were fairly simple. No drinking. No drugs. Clothes to remain on. With the group we associated with these rules were not really a problem and the entire affair went quite well.The next afternoon Erik and I were again in the tree house. The temperature was still quite warm for mid. "Listen, Mark," he said, his eyes darting around to discover any reaction on the other man's part, "I don't want you to think that this was all planned. You know? I mean, these things happen and nobody's responsible for them. You get people close together in one spot, and sometimes things happen that nobody wants to happen, you know what I mean?" No, that isn't true," Lynn interrupted in a quavering voice, "you did want it, all of you! You had it all planned from the minute I came on board!. I wasn’t allowed to their party as I was a boy. I didn’t even worry to attend their blah blah party.My flat was a 3 bhk with a big hall. We all first cleared the stuff from the hall and then arranged a dance floor for them with music. I took my beer case and went to my room. I straight up went to take a shower and jerked off imagining Manu on my bed.After the shower, I went to my bed to sleep. Then I heard a knock on my door. It was my sister’s friend. She wanted me also to accompany them.I was. They continued to French as Jeff lifted his mother off the couch and laid her on the floor. His hands began to roam her body. He found the top of her blouse and with one quick motion, ripped it away. It was then that Anna started coming to her senses, "Jeff, Oh God, we can't, please stop."Jeff chose not to hear. He undid his jeans and pulled them to his knees. His cock sprang into full view and Anna gasped, "No, no, we haven't gone that far. Please just let me up."Jeff began rubbing his cock on.