Place this clip in the middle of a fast sequence, right after the mistake becomes obvious and before the reaction settles. Follow it with the bruh sound effect for a deadpan drop, or precede it with goofy ahh sounds to set up the gag before the spam hits.
About this sound
This is a roughly four-second vocal clip of someone chanting 'pan pan' over and over in quick succession, with a final emphatic pair of shouts at the end. It feels frantic and ridiculous in a good way, like excitement tipping into pure panic, which is why listeners instantly treat it as a joke rather than real speech.