takes me back
I was in college in the middle to late seventies and working there as a TA / Instructor. I hung out with a group of other TAs and assorted grad students... and a bunch of us had an office in the administration building (which also housed both the Math and Computer Science faculty). Down in the basement of this building was a break room with one of those carousel food vending machines that sold pre-packaged sandwiches. These were uniformly depressing because the machine was not serviced regularly and the sandwiches were basically two slices of bread with turkey or ham and some wilted lettuce and, if you were lucky, a package of mustard and mayo, wrapped in saran wrap and with a label on it. I think they cost either .75 or 1.00.
As a prank, because we were tired of getting inedible food, we paid our $1.00 and held the compartment open and put a brand new sandwich in the machine... a fish head in between two slices of white break with a package of pickle relish and we smeared tartar sauce on the bread. And left it in the machine in tightly wrapped plastic wrap.
It stayed in there maybe 2 days and then, without the machine getting new sandwiches... it was GONE.
We laughed and laughed about it...
One of the many many pranks we pulled, most of which would get today's students either thrown out of college or arrested.