That's not funny and I understand why he is an X friend.A local tackle store at one time had a monthly contest for big bass. I very good friend caught one over six pounds on a Sunday and brought it home for the contest. I met him for coffee at al restaurant Monday morning. He of course told me about the fish. When the store opened he took it in to be weighed. While he was at the store I went to his Mercury outboard shop and picked up several spark plugs that had Mercury on them.
Later in the morning I went to the store and the owner removed the fish from the freezer and I inserted the spark plugs and the fish went back into the freezer. At the end of the month he showed up to get his $100 gift. Of course I had told all of his friends about the joke. When some one filed a protest the fish was cut open and the spark plugs fell out. I thought my (now x friend) would pass out. All of the rest of us had a great laugh.