The line comes from the 1994 comedy Dumb and Dumber, in which Jim Carrey plays the well-meaning but dim Lloyd Christmas. After Mary Swanson tells him his chances with her are about one in a million, Lloyd hears only the possibility and repeats the phrase with delight. The exchange became one of the film's most quoted moments, and short audio clips later spread through memes, reaction videos and soundboards. It endures because it perfectly captures blind optimism, turning any hopeless situation into an instantly recognisable joke.