Place it at the very end of a back-and-forth edit as the final word, after the claim it reverses. Follow it with awkward crickets for the reaction beat, or precede it with a shocking sting when the reversal needs extra emphasis before the cut.
关于此声音
A short voice clip of someone delivering the line 'but it's opposite day' as a last-second reversal, lasting just over five seconds. It lands playful and smug, turning a lost argument into a silly win because the phrase pretends every previous statement now means the reverse.