This happened a few years ago at a resort in Cancun. My husband and I had enjoyed some escapades with other couples, mostly of the strip down a little and kiss variety, but were not (and are not) full-on swingers. One afternoon we were out in the surf, and kissing. He started to get a little frisky, and soon I had my legs around his hips and my suit was pulled to one side, and things were happening. Another couple came out, and were not real close, but close enough to see what we were doing, and they started doing the same thing. It was pretty awesome.
That night, we ran into them at dinner and exchanged smiles, but no words. An hour or two later we ran into them again at the bar, and started to chat. They were with another couple at this point, and started to tell the other couple about our experience together. I was a bit embarrassed, but also turned on. We had found a large booth, in a dark corner, and started having conversations about sexy things we had done.
The second guy, Peter, suggested we play fantasy truth or dare, as a drinking game. It seemed silly, but we tried it. It was truth or dare, but we didn't really do the dares, we just described them in detail. So, for example, I was dared to take off my top, and I had to describe my bra and breasts in detail. There was some kind of drinking aspect to it, if you challenged someone for bluffing, and we all had fun and a lot of drinks. We eventually decided that was too cerebral for how drunk we were, so we started to give the choice of fantasy dare or real dare. Nicole was the first to pick real dare, and there was a long pause. Finally she was dared to take her bra off and place it on the table. She did a little shucking and sliding, and pulled it off from under her top...We all took a breath, knowing things had taken a little turn.
We went around the table, and there were dares about kissing your partner, and copping a feel, then dares about kissing someone else, and finally, copping a feel (over clothes) with someone not your partner. Eventually all the bras were on the table, and a couple of pairs of thong underwear. Everyone had groped their own partners, and kissed everyone else of the opposite sex. Peter, who seemed to be the one with all the ideas, suggested we go back to their room, which was close to a fairly secluded hot tub. We all went, and ended up slipping our clothes off behind towels and then sliding into the hot tub. We sat as couples and talked and kissed, and touched under the water. Eventually we decided it was time to go, and agreed to get slowly out and let them all watch us as we walked slowly, naked, over to our towels and then back to our own room...