Place it right after the setup line in a skit, then follow it with an Anime Wow reaction to sell the surprise, or cut to a SpongeBob Fail sting when the joke is a flop. Keep it as the punchline beat, not the opener, so the kid reply closes the moment.
关于此声音
This is a very short clip of a small child saying 'mmk' in a single quick utterance that lasts less than a second. The tiny, matter-of-fact delivery feels silly and a little sassy, like a youngster brushing off a question without saying more. It works as a light, playful reaction that lands because the voice is so small and the sound is so brief.