Place it immediately after the bad decision is revealed, then follow it with the Wrong Answer Game Show buzzer to underline the mistake, and finish with Oh My God Wow for the crowd reaction.
Über diesen Sound
This is a short, sharp spoken put-down lasting just under four seconds, delivered in a blunt, exasperated voice telling someone to reevaluate their fking life. It lands as a mocking reality check, funny because it is so direct and unforgiving, and it works best aimed at a spectacularly poor choice, such as buying a smart car.