Q: How does the moon cut his hair?
A: Eclipse it!

Explanation: A lunar eclipse happens during a full moon when the earth moves between the sun and the moon so that the full moon can no longer be seen.  The moon, of course does not have hair but that is part of what makes this joke funny.

Another way to say that you cut your hair is to say that you clip it.  (There is even a chain of shops called Great Clips where you can get your hair cut.)

This joke is funny because “eclipse it” sounds almost like “he clips it.”  I know that this joke does not make a lot of sense, but it does make me laugh.  Silly!

Here is a different look at the moon in the first science fiction film.  If you know the book or the movie The Invention of Hugo Cabret you will recognize it.  (Yes, Georges Méliès was a real person.)