Place it right at the reveal in a size-reaction edit, after a short build-up sound and before a laugh. Follow it with Emotional Damage Meme Sound for an over-the-top response, or with Oh My God Meme Sound when a second reaction should land after the first.
Bu Ses Hakkında
This is a 13-second Egyptian Arabic voice clip shouting ya lahwi ala kobrah at something enormous, stretching the final word into a long, theatrical wail of disbelief. It feels like mock horror rather than real anger, funny because the reaction is far bigger than the surprise deserves. Listeners instantly understand the joke even without seeing what caused it.