Tick-Tock is the crocodile from Peter Pan who swallowed an alarm clock after eating Captain Hook's hand, so his approach is always announced by ticking. The character comes from J. M. Barrie's play, first staged in 1904, and became widely known through Disney's animated Peter Pan in 1953. Because the ticking is such a clear warning signal, the sound has been reused in cartoons, stage productions and online edits ever since. Creators still use it today as instant shorthand for danger creeping closer, a deadline approaching or a joke about time running out.