Place it as the final line after a harmless betrayal reveal, then follow immediately with a shocked sound for the reaction shot. If the scene turns into a chase, add the oh no no no laugh underneath the cutaway instead of using another threat line.
About this sound
This is a roughly five-second voice clip of someone calmly delivering the line about burning down an orchard tonight, ending with a casual okay. The flat, overly specific threat makes it feel absurd and funny rather than genuinely menacing, like a villain monologue shrunk down for a prank.