Common sense and a sense of humor are the same thing, moving at different speeds. A sense of humor is just common sense, dancing.
I find that kid actors are great reminders of the simplicity of acting. As you get older, you can sometimes complicate things a little more. You can become too aware of, 'Okay, this is the scene emotionally. This is where we need to be. We've got the climax coming up.' You can start to analyze it to

