Place it right after the on-screen mistake appears, then follow with the Windows XP error sound for a second failure beat. For a bigger pile-on, end the sequence with a cartoon chase cue once everyone starts reacting and moving.
Über diesen Sound
A just over one second voice clip of someone blurting out 'Oh Schuhen' in a startled burst. The delivery lands as surprised and slightly baffled, turning a tiny slip or sudden realization into a funny, awkward reaction that feels bigger than the moment itself.