The line comes from Jaws, Steven Spielberg's 1975 film about a great white shark terrorising the resort town of Amity Island. Roy Scheider plays Police Chief Martin Brody, who says it after getting his first clear look at the shark while chumming from the stern of Quint's boat, the Orca. The line was reportedly improvised on set and became one of the film's most quoted moments, later entering everyday speech as shorthand for being badly outmatched. Its dry delivery and instant recognition keep it circulating in edits, reaction videos and memes decades later.