Place it immediately after the failed moment in an edit, then follow it with a game show buzzer for a sharper payoff, or let a scream meme take over if the reaction needs to escalate further.
About this sound
This eight-second voice clip is a flustered speaker stumbling through a string of stalled 'er' sounds before blurting out a frustrated expletive. The halting start makes the outburst land harder, giving it a relatable mix of embarrassment, disbelief and barely held-back anger. It works as a quick burst of comic frustration for a failed plan, an awkward slip or a moment that leaves someone lost for words.