Place it as the payoff after the bad decision, not before it. Lead in with the galaxy brain meme sound for the fake-smart build-up, then switch to this clip, and finish a scene later with a classic fart sound button as the callback.
About this sound
This clip is an exaggerated fart sound stretched to almost twelve seconds, built as a single gross-out gag rather than a quick pop. It feels deliberately stupid and lobotomised, the kind of low-effort humour that gets funnier the longer it drags on and the more serious the moment around it was meant to be.