Place it as the reply after a surprising claim, then follow it with another reaction before the conversation moves on. Pair it with the Ceeday Huh sound for a double take, and use the No No Wait Wait sound when the speaker tries to explain again.
À propos de ce son
This is a short spoken Italian line, lasting under two seconds, in which the speaker says they do not know what something means. The flat, puzzled delivery makes the confusion feel genuine rather than performed, giving it a dry, awkward humour that lands without needing a translation. It works as a quick, deadpan reaction to nonsense, jargon or a message that makes no sense at all.