Place it immediately after the question or accusation in your edit, then follow it with the Bruh sound effect and cut to the reaction shot while the joke is still fresh in the viewer's mind.
About this sound
This four-second clip is a single Polish voice saying 'I don't know, though I guess,' holding back just long enough for the excuse to fall apart. It feels sly and funny, like a wink from someone who clearly knows more than they admit. That amused, unhurried delivery turns a plain denial into a playful confession, ideal for moments when the truth is already obvious to everyone listening.