This is very trivial and lighthearted. I cannot stress enough that all the people involved love each other very much and love spending time together.
I've just spent a couple of days by the sea with 2 other couples. We do this quite regularly. We always have a big jigsaw set up which has to be finished by the end of the stay. (I know, sad..) Anyway, this time over lunch one day we were fantasising about working in a jigsaw factory and removing a piece from every jigsaw before packing it. One couple left last night. One other person and I sat up to finish the puzzle. There is one piece missing. Now, the dilemma. Coincidence? Accident? Or did the other couple take it with them. If the last- would you laugh? Be a bit upset? Plot revenge? If so, what revenge?