In inpatient psychiatry I tell my coworkers “I hope your shift is mind-numbingly boring” or something similar (keyword being boring) because in my line of work, interesting (usually) = bad.
What’re yours?
“Don’t let the magic smoke out!”
In electrical/computer/embedded engineering, we have a running gag that microchips work by trapping magic smoke inside, and when you do something wrong, you “let out” the magic smoke.
Different origin though. A smoke test is more like if you try running something and you see smoke then you haven’t fixed it yet
And that smoke is exactly the magic smoke the original comment was talking about…