There was a computer game I played a bit at a kid that had a "boss coming" mode. It'd cover the screen with fake progress bars and messages like "updating spreadsheets" and "compiling estimates" or something. Clearly meant as a jokey easter egg, but fun.
The original Leisure Suit Larry in the Land of the Lounge Lizards (1987) had a 'boss coming' key. It showed a spreadsheet bar graph thing, that looked like 'work' although if you looked at the labels it had columns for different condom types like "plain", "ribbed" and a couple of others.
