Your laptop? Smoke machine. Your production server? Smoke machine. That Raspberry Pi running your home automation? Believe it or not, also a smoke machine. Nothing humbles you quite like watching your code turn expensive hardware into an impromptu fog generator. Usually happens right after you deploy that "minor optimization" that somehow creates an infinite loop at 2 PM on a Friday. The magic smoke that lives inside electronics has a very strict one-way exit policy—once it's out, good luck getting it back in. Pro tip: If your machine starts practicing its smoke machine impression, that's the universe telling you that maybe, just maybe, you should've tested that memory leak fix more thoroughly.