Who would eat a sardine sandwich for breakfast?

I am sorry to say that I had an uncle that loved sardine sandwiches for breakfast. In particular, sardines packed in mustard. How in the world can anyone stomach a sardine sandwich at breakfast, much less any other time of the day? Question: i assume there are those among us that have a quirky appetite for breakfast, lunch and dinner foods. Do you have a family member that likes to eat “oddball” food combinations? Do you care to share?