Long story (which I’ll take some time to write about soon) short, she was bound like that one Saturday morning when I surprised her with Karl. I had...left her tied down with a unicorn vibrator working its magic. To describe the vibrator it was a curved vibrating dildo of average size that not only vibrated but could twirl…it also had a nub that rested against her clit that also vibrated. It had become her favorite toy until I found a double-headed one that would vibrate in her pussy and rear at. They were surprised to see no Sarah and sympathetic as they knew she hadn,t felt well for weeks. They,d invited us to their rented house a month previously and we,d played cards and enjoyed each other,s company, but nothing else and had vowed to invite them to ours which now couldn,t happen. I told them also there was a good chance I might get moved to another base and they wished me luck then invited me to join them at their house again. After a few drinks we were all feeling good and Mark. "Do you want to lie down?" his soft voice surprised me because it was right in my ear. I could feel his breath, hot and humid and it made me shiver."Um, kinda," I said slowly. "Where did you learn how to do this?" On the internet." He chuckled and I giggled and gave him a disbelieving look. "Lie down, on your stomach, it'll be good." God!" I laughed, hesitating without knowing why, except he was my brother, and this was his bed, and..."What?" Troy asked, not pushing me, not forcing me at all,. "Will you be good?" Of course not!" came the instant chorus from The Girls.Alright, that was a dumb question. Rephrasing it slightly, I asked, "If we drink in my room, who's going to monitor the alcohol and guests so that I don't get in trouble?" Since I've already been the designated driver, I'll do it," Amy volunteered. "But next time it's someone else's turn."There were sheepish looks from the rest of The Girls, but we soon piled into the cars and headed back to the dorm. On impulse I tried.