I knew this couple once. Larry and May. They were quite normal. Nothing unique. Then one day, they did something mad. I don't know if it was spontaneous or what. They met up with another couple. Lisa and Don. I'm not sure if anything ***** went on. Maybe it did. What happened after that was of note. The ordinary couple ceased being that. They swapped partners! Not in bed. No, in real life. They made two new couples. Larry and Lisa and May and Don! Was it a joke or drunken prank? Whatever it was, it was forever now. They all moved into the same house. And they planned a double wedding. I want an invite. What would the neighbours say? Curtains everywhere would be twitching.