Place it right after the moment of accusation in the edit, with Enemy Spotted just before it to show you have been singled out, then follow it with Okay Let's Go to move the scene on before the joke overstays its welcome.
À propos de ce son
This is a short Spanish voice line lasting just over a second, spoken in a defensive, slightly exasperated tone as the speaker tells someone not to point at them. It feels funny and awkward, like being caught out and immediately denying it, which makes it work as a quick reaction. The line comes from Age of Empires II.