Place this clip at the exact frame of the mishap, after the build-up and before the reaction shot. Follow it with No No Wait Wait for a second protest, or lead into it from Knuckles Oh No when the mistake builds in stages.
Über diesen Sound
A very short clip, under a second, of a voice shouting 'Corda No' with stretched, urgent emphasis on the no. That single panicked outburst gives the listener instant alarm mixed with comedy, the feeling of watching something slip away at the last second and reacting before there is time to explain what went wrong.