I got comfortable lying on my back, Natalie curled up on my left-hand side and Allison took my right, throwing her leg over mine and grinding her crot...h against my hip, leaving no doubt where her interests lay. Natalie, watching this, followed suit, not about to miss whatever was in the offing. I leaned in and kissed Natalie first, she needed it more since she was so nervous, and I was hoping she’d calm a little once things got underway. I tried to put all thoughts of my sister and Anh out of. We agreed to meet them at 7:00 PM. My heart was racing. Anticipation all but overwhelmed me.We had a fun dinner with Bob and Tina. We peppered them with questions about the swinging lifestyle. Their advice was pretty straight forward - be careful, and use a condom unless you are sure the other couple is disease-free. Bob volunteered, "Sue is the ultimate catch for a male swinger. Young, beautiful, and big tits. Unfortunately for you, Craig, the majority of women in the lifestyle are. ..?"A second passed...then two...three...ten...nothing. I don't know too much about ghosts; I've always been pretty neutral on the subject of their existence. But wasn't there supposed to be a gust of wind? A drop in temperature? It would have been easy to tell in this sweatbox, but nothing. My heart sank a little. I guess I'm just another horny college student with an overactive imagination.I pushed the thoughts out of my mind. Mystery solved, there was nothing more to it. Now, if I wanted any. "How was that?" I asked. “That was nice,” Brett replied. “Thank you, now can I see you naked?” I asked. “Sure sis,” Brett replied. He undid his pants and pushed them down a bit. His cock poked out through his boxers and I saw standing out very erect. “Wow Brett, has it always been that big?” I asked. “Well not always, but it's gotten a lot bigger in the last couple years,” Brett replied. I just eyeballed it for a minute, it was monstrous in my eyes anyway. “Can I touch it?” I asked. “I don't.