Dinner was a high-class affair, and there was again a copious amount of wine served. By the time we made it back to the casino we were all at least somewhat drunk. As we made our way into the dance club on the first floor, Marie ordered four bottles of expensive champagne for the table.
We sat there drinking and reminiscing about previous craziness. Amber told the story of Marie giving a different teacher, the gym teacher, a blowjob in his office and then kissing her then-boyfriend right after she came out of the office. Marie retaliated by telling how Amber snuck a guy into her bedroom through the window and fucked him during Christmas break while her grandparents were staying at their house in the room next to hers.
After a few more similar stories and a lot more wine we were all quite drunk. Just then four guys approached the table and asked if we wanted to dance. They led us to the back corner of the dance floor where it was darker and much more out of view of the tables and the rest of the dance floor. The area was a smaller dance floor with a narrower opening out onto the main dance floor. There were two columns at the narrow part with plants next to them. You could only see into the back area from the right angle.
We danced to the music in one big group. A tall, muscular guy pressed up against Marie's ass with his pelvis and ground against her as they danced. A somewhat shorter guy with glasses had his arms around Amber's waist, grinding against her from the front. Angie and I danced together with the other two guys near us.
I glanced over and saw that Marie was twerking against the guy behind her, grinding ass against what was now a pretty obvious bulge in his pants. The two guys by us saw it as well and left us to dance near the two of them.
I watched in shock as Marie pulled her cocktail dress up to her waist, exposing a very thin thong as she ground against the guy. He started to thrust his hips, pressing the obviously very hard cock in his pants against Marie's barely covered mound.
The other two guys moved to dance in the opening out into the main dance floor, blocking the view into where we were dancing. I stared wide-eyed when the guy behind Marie unzipped his pants and pulled his cock out.
I nudged Angie and whispered "Oh shit..." to her as the guy rubbed his cock along the thin material of the thong. I could see a wet spot on the dark blue thong.
Angie gasped and muttered "Should we stop her?" as Marie ground back against the cock, not caring that she was on a public dance floor. Amber was facing away from Marie, her shirt open, bra pulled down, the hands of the guy she was dancing with all over her breasts. She wasn't going to be any help.
I couldn't look away as Marie reached back and pulled the thong to the side. That was all the encouragement that guy needed, and he slid quickly and completely into her. The loud music covered up any noises Marie made as he mounted her, but from the look on her face, she clearly enjoyed it.
I looked at Angie and saw her staring at Marie as the guy started to fuck her. We both watched in shock as Marie started thrusting herself back onto the cock. The guy grabbed her hips and guided her, slamming himself hard into her.
