Go [in] early, [bring] a fish covered in blue cheese dressing[,] and hide it in the ceiling [of] [your] [boss's] office.

Nice.

For years I'd threatened: "the only way you'll know I've quit is an empty desk and a fish in the microwave." Whenever some idiot nuked a fish for lunch, everyone would drift past my desk and confirm I'm still employed.

When I did quit, my only statement was an animated gif of a fish slowly turning in a microwave. I was already headed for the airport.