Place it at the very end of a Q&A edit as the final reply, after the question card freezes. Build the sequence with a Huh sound effect first for confusion, then this clip, then follow with a wrong answer game show buzz for a failed attempt.
Über diesen Sound
This 1.3-second Italian voice clip has a man named Mosconi flatly saying 'ah non lo so io' with tired, exasperated delivery. The line means 'I don't know' and feels like a verbal shrug, dry and dismissive rather than loud. That deadpan give-up energy makes it funny, perfect for cutting off a question with no real answer.