Put it immediately after the boast in an edit, then follow with Sad Trombone to stretch the fall, or open with Ka-Ching Money Sound before the claim so the claim looks bigger before it collapses.
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This two-second clip is a brief, cocky vocal jab that lands right after a show-off line and takes the air out of it. The effect is dryly comic and deflating, making a big entrance feel suddenly small and silly. It is shared online as a short reaction sound for failed boasts.