One of my favorite stories to tell is when I had a job changing expiration dates on cans of tuna fish. I had just left college and was desperate for money, couldn't find a legitimate job anywhere. I went through a temp agency (who told me, after 10 years of college and grad school, that I had no real skills), and they assigned me to go to a factory at midnight in an industrial section of St Louis.

Each night a truck would pull up and offload pallets of cans of tuna fish which had expiration dates that had already passed. We would proceed to take the label off, put a new label on and add a new expiration date. We'd then pack them up and put them back on the truck. I don't remember which brand but it was one of the major ones.

The official story was that the dates were wrong to begin with and we were just correcting them. That may have been true but I've always wondered....

luckily I got a real job a few weeks later, though I still can't have a tuna fish sandwich without thinking about that job.