We have been married for four years and our attitude towards sex has always been liberal.

Both my wife and I had considerable sexual experience before marriage; however, neither of us had slept with anyone else until recently.

Susan, my wife, was a go-go dancer before we got married and I guess she is still somewhat of an exhibitionist. She loves to pose for my Polaroid for “beaver” shots and also likes to wear revealing clothes. I might also add that she still has a gorgeous figure — long, slim legs, firm breasts and a lovely, well-rounded ass.

A few weeks ago, we invited a few couples to our house for an informal party. After some general conversation and drinking, we started listening to music. As is the case with many parties of this sort, the conversation gradually turned to sex. It was then that our friends learned that Susan had been a go-go dancer.

It didn’t take much coaxing to get Susan to agree to dance for us. And because of the drinking and the general mood of the party, Susan started putting on quite a sexy show. As she danced her short skirt slid up so that everyone could get a good glimpse of her ass. And since she was wearing a short, black skirt with sheer, white panties, her ass was really noticeable.

After this revealing dancing had gone on for a while, one of the guys started clapping and yelling, “Take it off.” Suddenly everyone, including the other ladies and me, joined in the chant. This spurred Susan on. Soon she had her legs apart and her hips hunched and was doing a slow grind just like she was fucking someone. She also had a very seductive look on her face as she began slowly unbuttoning her blouse.

I thought that she would stop after she removed her blouse but when everyone saw those luscious breasts covered by her scanty bra, the hollering continued to encourage her. Susan teased everyone while she unsnapped her bra, holding it up in front of her and lowering it inch by inch before she let it drop completely. And when she finally did, everyone gasped as she exposed her lovely breasts. Then she started rubbing them as she continued her sexy grinding and, by this time, her skirt was inching up her thighs. In certain positions her crotch was plainly visible, giving everyone a glimpse of what was to come. Soon she unzipped her skirt and let it fall to the floor.

It wasn’t long before she removed her panties and danced in the nude for us. By now a few of the couples had started necking. One man had already started to finger his wife while she was busily playing with his penis. Susan moved over towards one man who was sitting down and positioned her pussy squarely in front of his face. He immediately started to eat her. It was unbelievably exciting for me to see Susan dance, strip and finally get eaten by another man. Soon everyone was out of their clothes and, before the night was over, we had all screwed each other at least once.

Since that party we have all become confirmed swappers. Susan and I are only sorry that we didn’t do it sooner. After all, we sort of fell into it by accident — it wasn’t something we’d thought about before.