But your people don't see the checks in action. For all they know, you've passed those already. The main thing is, there is a power differential, and "firing"

But your people don't see the checks in action. For all they know, you've passed those already. The main thing is, there is a power differential, and "firing" jokes are, at their core, saying "I have power over you". It's just not that funny. And for new managers who feel compelled to make them, "why does my power make me giddy" is a good introspective question to ask. No, that doesn't imply they are bad people. New power does things to everybody's mood. But asking the question helps remind yourself. (For an entire framework to keep that impulse in check, servant leadership works pretty well, IME)