Everyone remembers James Cagney snarling “You dirty rat!” at some poor soul in a gangster picture.
There’s just one problem: he never said it. Not in Taxi!, not in The Public Enemy, not anywhere. The closest he ever came was growling “you dirty, yellow-bellied rat” through a locked door in the 1932 film Taxi! — a mouthful that the public, over the following decades, quietly sanded down into the punchier line everyone “remembers” today.
Cagney found the whole thing so persistent and so wrong that he addressed it directly at an American Film Institute banquet in 1974, telling the room flatly: “I never said ‘Mmm, you dirty rat!'” By then it hardly mattered. The misquote had become more famous than anything he’d actually said.
It’s a strange kind of immortality — being remembered forever for words that were never yours — but it says something about how completely Cagney owned the tough-guy archetype that audiences felt entitled to invent his best lines for him.
Anecdote confidence: Well-documented — the misquote’s origin and Cagney’s own 1974 denial are confirmed across multiple biographical and reference sources, including his repeated public corrections during his lifetime.
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