In the 80's I did a stint directing the diagnostic departments of a hospital in the Pacific NW. The pathologist was also the Medical Examiner for the city, a burly fellow of middle age. We'll call him Don, a generally affable guy, we went fishing together several times. The hospital had a CEO, I'd describe him as a Suit with a Large Ego.
It was inevitable the two of them would clash, Don took orders from no one, The Suit wanted to give orders to everyone. At some point The Suit figured out that he didn't have what it took to bend Don to his will, and to take another tack. A prank, a practical joke. He should have known better, but he went to the fish market and got a trout.
He went into Don's office one evening, got on a chair, took down one of the ceiling panels and placed the fish up there, replacing the panel.
I only put together all the facets of this after it happened, when over a beer in his office Don told me the story.
A couple days after the fish was placed, Don's office started to smell, worse by the hour. Don, being a fisherman, recognised the smell, and sniffed out it's location.
The list of suspects was small, and the CEO's secretary didn't like him, and spilled the beans to Don.
I mentioned Don was the ME for the city? He bided his time, waited until he had a body to autopsy that had been dead for some time, and got a bunch of these from it:
He went into the CEO's office one evening, and put them behind the file cabinets, then sat back and waited.
A couple of days later, the CEO noticed a couple of these, buzzing around. Large, loud and aggressive, hungry..
By afternoon there were several of them, he was busy swatting, wondering where they came from. The next morning when he came in, his office was aswarm with them, buzzing, butting into things. He now suspected Don, but somehow thought Don had caught flies, and somehow herded them into his office. He never found the larval husks. His office had to be sprayed with insecticide, and left empty for a day, then ventilated.
Don tipped his beer to me and shook his head...."What was he thinking, getting into a pissing contest with a Pathologist?"