The phrase comes from George Orwell's dystopian novel Nineteen Eighty-Four, first published in 1949, where Big Brother is the unseen leader of the ruling Party and the slogan warns citizens they are constantly observed. Long after the book, the line entered everyday language as shorthand for government surveillance, corporate tracking, and loss of privacy. Online, it resurfaced as a meme sound for reaction videos, political edits, and jokes about phones, cameras, and algorithms listening in, keeping it relevant whenever surveillance feels close to home.