Put it directly after the false claim in your edit so it functions as the reply. Follow it with a bruh to underline the disbelief, then cut to the person's reaction. For a longer bit, stack two denials first and save this accusation for the final one.
Sobre este som
This clip is a man shouting the Spanish accusation 'Mentiroso, caluniador!' — liar, slanderer — delivered as a loud, drawn-out outburst lasting just under six seconds. It feels theatrically offended and confrontational, turning a small fib into a full courtroom-style charge, which makes it funny to drop when someone is caught exaggerating.