boss key

/B AA1 S K IY0/
noun
  1. 1

    A key which, when pressed, hides a program from view by a superior in the workplace.

    โ€œWhen the directors came out of their meeting, I hit the boss key to replace my game with a fake spreadsheet screen.โ€

Synonyms

Source: https://en.wiktionary.org/wiki/boss%20key