A semi-stale turkey-on-white-bread selected as the last pre-packaged sandwich available from the soon-to-close commissary.*
*Note: This is only true if the sandwich is "flavored" with hunger resulting from 6 days of eating no solid food because of Russian flu, and garnished with a day spent skiing prior to eating it.
I experienced such a sandwich when I was a young adolescent, and it is among the most delicious things I've ever eaten.