As one who enjoys a genuinely funny film, I've always been a moderately warm fan of the old time comedians: Buster Keaton, Charlie Chaplin, The Three Stooges, The Marx Brothers, and so on. (My associate on this site is more of a scholar on the topic.) My taste for this sort of humor carries on into cartoon characters such as the Looney Tunes, Pink Panther, the Peanuts, and others.
A time or two, I have paused to wonder where does such source material come from, and what license do they exercise or what universal law is inherently understood that makes these sort of antics humorous. I don't wonder that so much anymore however. Everyday now, I found myself surrounded by similar, and by no mean any less exaggerated, antics within my own home. The very heart of source material for the great comedians of our day bubbles daily in homes that are blessed with small children.
Creative license is given to a small child to create any variation on a theme that their heart desires, regardless of whether it is relevant, correct, or practical. Consequences for their actions are... well, being learned. So the element of repetition is frequently employed. Parents are blessed with the audience's position of omniscience in any given situation, being able to observe the plans of of their children, knowing they won't work, and then getting to watch them whole-heartedly attempt to execute the futile, anyways.