Place this clip at the exact beat of the embarrassing action in your edit, then follow it immediately with a shocked sound for the reaction shot, and finish with the oh no no no laugh as the camera holds on the culprit.
About this sound
This clip is a drawn-out wet fart effect, a series of sputtering poot poot noises that runs for about sixteen seconds instead of one short burst. It feels gross, childish and deliberately over the top, turning a small rude noise into a long, silly embarrassment that lands harder the longer listeners have to sit with it.