The line comes from Tim Burton's Batman in 1989, where Michael Keaton played Bruce Wayne and helped redefine the character for a darker era of superhero films. Keaton returned to the role in Batman Returns in 1992 and the phrase became closely tied to his version, often quoted alongside later Batman actors. Clips of the moment circulated through trailers, TV reruns and early meme edits, and it remains a shorthand online for claiming a secret identity with total confidence.