If breakfast is the most important meal of the day, shouldn't it be served all day long?

McDonald's seems to think so. The fast-food chain began offering 24-hour breakfast in select areas Tuesday. Why is McDonald's expanding its breakfast hours now?

One reason could be that U.S. sales have dipped slightly during the past year, but as the Wall Street Journal points out, customers have been requesting the ability to order breakfasts later in the day for years. If that's news to you, look no further than Hollywood for proof that Americans take their breakfast very, very seriously--especially at fast-food chains.

Here are three of the best breakfast-related movie freakouts ever.

Big Daddy (1999)

After racing to get to McDonald's by 11 am, Adam Sandler's character Sonny Koufax is informed that the cut-off time for breakfast is actually 10:30. Koufax then launches into a tirade that involves throwing a perfect stranger's french fries on the floor. 

Falling Down (1993)

When Michael Douglas's character William Foster is informed that he's missed the breakfast deadline by three minutes, he takes matters into his own hands by pulling out a submachine gun and demanding that the manager make an exception.

The Big Lebowski (1998)

After getting into a screaming match with "The Dude," over coffee, John Goodman's Walter Sobchak launches into a separate argument with a waitress about his first amendment rights, his fallen buddies in Vietnam, and how he's going to finish his coffee.