The line comes from Jack Burton, played by Kurt Russell, in the 1986 action comedy Big Trouble in Little China, where Burton delivers it as a cocky explanation for his quick reactions. Fans have quoted it for decades as shorthand for improbable skill and dumb luck, and short clips of the line later circulated online as a reaction sound. Its brevity and confident tone make it easy to drop into gaming videos, sports edits and everyday fail compilations.
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Jack Burton's quick boast 'It's all in the reflexes' from Big Trouble in Little China, used as a reaction sound for fast catches, dodges and lucky escapes.
A confident male voice delivers the line in a single smooth breath, with a cocky, self-satisfied tone that lands like a punchline after a close call. The delivery is short and punchy, just over a second long, so it fits neatly over a clip without drowning out the action underneath. It sounds like a boast made right after pulling off something improbable, half joke and half swagger, and that timing is what makes it work. Dropped at the exact moment of a save or dodge, it turns an ordinary reaction into a knowing wink to the audience.