Put it immediately after the false claim, as the cut to the reaction, then follow it with the Wrong Answer Game Show sting for a game-show fail, or with Sad Violin for mock sympathy after the lie is exposed.
关于此声音
This is a very short vocal clip, under a second long, repeating the German word for lie twice in quick succession. It lands as a quick, mocking accusation, turning a doubtful claim into a joke without a longer argument. The bluntness makes it feel funny and confrontational, perfect for calling out an obvious fib the moment it appears.