Place it right after the empty waiting shot in your edit, once the action has clearly stopped. Follow it with the sad violin to stretch the dead moment, then cut straight back to normal speed footage for contrast.
Over dit geluid
This is a 7.5 second Spanish voice clip where someone keeps whining estoy aburrido, which means I am bored, in a drawn out goofy voice. The feeling is funny and painfully relatable, like time has stopped, turning dull waiting and having nothing to do into an exaggerated complaint.