The clip comes from Austin Powers in Goldmember (2002), the third film in Mike Myers' Austin Powers comedy series. In the film, Dr. Evil's attempts to quiet people down become a running gag: rather than whispering "shh," he shouts "SHOOOSH!" with full theatrical rage, the opposite of what he was told to do. The absurd contradiction made the moment one of the film's most quotable bits, and soundboard users adopted it as a meme shorthand for ironic, over-the-top shushing. Two decades later it still shows up in reaction videos and meme edits, usually captioning someone who makes a situation louder while demanding quiet.