Use it near the start of a hunger joke, right after the empty plate appears, then follow it with Risadinha de Ladrão once the snack finally arrives to close the bit with a laugh.
关于此声音
This short Portuguese voice clip has one person politely saying they would like to have a snack, in a plain, earnest tone that sounds almost too formal for such a small request. That contrast gives it a gentle, deadpan humour, especially when hunger is already obvious. It circulates as a Brazilian meme audio, reused in edits and chat reactions about waiting for food.