It was 5.30pm Friday, time to go home and really looking forward to the weekend. As the company offices are on an estate on the outskirts of town they lay on a shuttle bus to the centre and the station. I was sitting alone behind Rachel, who I work with, and her friend Sarah who works on another floor. Rachel asked Sarah what she had planned for the weekend. Sarah probably did not realise she was talking loudly enough for me to hear but my ears pricked when I heard her reply. " I'm meeting up with some friends from college, we are four guys and four girls. We met up last weekend as well, but I cannot remember much about it. I must have got totally wasted. All I know is I woke up on my bed still in my dress. I must have had a good time because I had no panties on, and I haven't been able to find them. I reckon one of the guys must have shagged me but I don't know which." Rachel was giggling, and I was struggling not to start myself. Sarah continued. " It's going to be embarrassing. I can hardly say hi guys, which one of you had me last week and by the way can I have my knickers back?" Rachel , always the voice of reason, suggested that Sarah would know immediately from the smug look on the guy's face. Then Sarah said she was going to arrange to meet one of the other girls a little earlier and find out from her what had happened. The shuttle arrived at the station, we all got off, said goodbyes and went our own ways. I was dying for Monday to come so I could get Rachel to tell me more. She would know as she travels in with Sarah. Monday morning I started to interrogate Rachel. Girls can never keep secrets, secrets only exist so that girls can reveal them. Apparently Sarah met up with one of the other girls, Tina. Tina told Sarah that she had got well and truly plastered, everyone had gone back to one of the guys apartment. After more drink Sarah had then done a striptease for the guys, finishing by throwing her panties over her shoulder and then putting her pussy near their faces inviting them to have a taste. The four guys took turns to shag her while the other girls looked on, all of them having a good laugh. When it was time to go, the girls had got Sarah dressed, except for panties which no-one could find , all of them took a taxi back to Sarahs and the three girls had carried her inside and put her to bed. I piped up that the three girls must have been furious. Rachel said no, apparently they thought it was a great laugh watching a live sex show and also Tina had told her boyfriend about it and he got so turned on he gave her the best seeing-to she'd had in weeks. "So what happened this weekend when they all met up again ?" I asked. Rachel giggled before replying. " The same again, but this time Sarah only had a couple of drinks. She wanted to be able to remember it all. "