The line comes from Anchorman: The Legend of Ron Burgundy (2004), where newsman Brian Fantana, played by Paul Rudd, advertises the fictional Sex Panther cologne with the illogical boast that it works 60% of the time, every time. The contradiction made the quote instantly quotable, and it survived as a shorthand joke for false confidence long after the film. Online, creators reuse it as a reaction sound whenever a plan, prediction or product claim is obviously unreliable, keeping the joke alive because the logic is still funny on its own.