Did you know the movie within a movie in Home Alone—the gangster film Angels With Filthy Souls—is not a real movie? Hollywood stars Seth Rogen, Chris Evans and even Home Alone's Google-repping lead actor apparently didn't.

That's right, this Christmas, not only did Rogen admit on Twitter that he thought Angels With Filthy Souls was "actually an old movie" his "entire childhood," but Mr. Captain America himself echoed the Pineapple Express actor's shock at learning that the gritty, black-and-white, pizza-guy-scaring short was made specifically for 1990's now-classic Home Alone.

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Angels With Filthy Souls

"Me too!" Macaulay Culkin chimed in, apparently also claiming via Twitter that he didn't know the film-within-a-film was fake. Which seems slightly unbelievable, seeing as Culkin's Kevin McCallister is the one who watches the movie in Home Alone. (The entertainer was only 10 years old at the time, so perhaps he really didn't know of the short's particulars.)

In fact, Home Alone's fake gangster film is an homage to 1938's Angels With Dirty Faces, an early Warner Bros. crime pic that starred big names in the Golden Age of Hollywood such as James Cagney, Humphrey Bogart and Ann Sheridan.

So what about you? Did you know that Angels With Filthy Souls was never an actual feature? (What about Angels With Even Filthier Souls, the follow-up fake film that appears in 1992's Home Alone 2: Lost In New York? Yes, it too is also a fake flick that was created especially for the movie in which it appears.) Well, if you didn't know, now you do!

Keep the change, ya filthy animal.

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