Place it as the payoff at the end of a prank beat, then follow it immediately with a funny ha ha laugh to sell the reaction. For a bigger fake-out, put a Metal Gear Solid alert right before it so the edit builds to a ridiculous reveal instead of a quiet ending.
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This clip is a short, exaggerated fart effect stretched to nuclear proportions, lasting about two and a half seconds with no voice or music. It feels shamelessly gross and overblown, the kind of blast that turns an ordinary moment into instant slapstick embarrassment for whoever gets blamed for it in the room.