It's the one you ate for lunch, but now you're wondering if it was worth it.
Maybe it was just a little too salty, or perhaps the bread was just a bit too stale.
Either way, it's a sandwich that haunts you still.
Want to learn more about the science behind Regretful Sandwiches? Read about it and discover the psychological effects of a meal gone wrong.
Or if you're feeling generous, Make Amends with your Stomach and try to forgive yourself (but not the person who made it).
But seriously, have you considered therapy?
Or at least a good nap?
Or both?