Place it at the end of a short exchange, right after the question lands, then follow it with Bruh for a second reaction and Baby Laughing Meme Sound Button to close the scene before it cuts away.
關於此聲音
This is a 0.4-second clip of a young child letting out a single short 'uh', a brief vocal sound with no other words around it. It feels awkward and funny at once, like a caught-off-guard reaction to something unexpected, and its tiny size makes the hesitation land harder. The sound works as a quick, deadpan response when a fuller reply would be too much.