Place it immediately after the mistaken claim in an edit, then follow it with Awkward Moment to let the correction hang, or with Eh Eh Ehhhh when the other person tries to argue back.
O tym dźwięku
This short clip captures Nagito Komaeda delivering the Japanese line 'Sore wa chigau yo' in a calm, pointed voice over about two seconds. It feels smug and lightly mocking, like a confident correction that stops a conversation in its tracks and makes the mistake feel obvious.