Place it right after the repeated line in your edit, then follow it with Ceeday Huh to underline the confusion before moving on. Lead into it with Oh My God Wow and let the repeat land as the payoff.
Over dit geluid
This is a short three-second spoken reaction built around the phrase in its name, kept brief enough to land as a single pointed reply. It gives a dry, knowing kind of humour, the feeling of catching someone repeating themselves and answering without starting an argument. It works because the wording stays simple and direct, letting the repetition itself do the joking.