Is it normal for friendly neighbours to have key parties.

When we first got married and moved into a new subdivision our neighbors were all about the same age. We all soon had kids and when they all started school, Four of us Mothers started playing cards twice a week. We would have some wine and talk about our marriages. Sex was brought up and most of us admitted it was getting boring. One Mother suggested maybe we could try switching partners. We laughed and said sure you think our husbands would go for it. She said you'd be surprised. One of your husbands has already propositioned me. We couldn't afford to go out much, so we had house parties on Saturday night after the kids were in bed. One night after a few drinks, the host came around and collected our house keys. She put them in a hat and asked the men if they wanted to play a game. She said all us wives have agreed to this. Husbands take a key without looking and whoevers key it is they go home with her for the night, and be sure to leave before the kids woke. If you get your own key, well you just have to fuck your wife. All the men agreed and we did it for about 2 years before some of us started moving away. It made our sex lives more exiting, including with our husbands.