Put it right after the mishap in your edit, with Cartoon Slip just before the impact to set up the accident and Nelson Ha Ha straight after the excuse to turn the denial into a shared laugh.
About this sound
Vadivelu says 'Theriyaama modhiten' in this one-second voice clip, sounding caught out and quick to deny he meant to do it. It feels awkward and funny at once, turning a small accident into a joke instead of an argument. The line comes from Vadivelu's Tamil cinema comedy, where his excuses became widely quoted reactions.