Place it near the end of an edit, after the setup has already made the obvious point clear. Follow it with the Shocked Meme Sound for a delayed reaction, then finish with the Oh No No No Laugh to turn the beat into a payoff.
About this sound
This six-second clip is built around a single drawn-out mmmmmm hum, held long enough to feel deliberate rather than accidental. It lands as awkward and faintly silly, the kind of flat, unimpressed noise that works when words would overexplain the moment. Its simple, repetitive delivery makes it easy to recognise and hard to mistake for anything else.