Place this clip as the final beat at the end of a reaction edit, right after the disagreement peaks. Lead into it with the Windows XP Error sound for the failed idea, then let this be the last word before a Cartoon Chase cue follows the walk-out.
About this sound
This is a short voice clip, about two and a half seconds long, of a defiant young-sounding character announcing that he is done and going home. It lands as petulant, funny and instantly dismissive, like a childish walk-out played for laughs, turning a small disagreement into a dramatic, sulky exit that everyone recognises as a joke rather than real anger.