Negative humor is forgotten immediately. It's the stuff that makes us feel better about our lives that lives long. Much more satisfying. Enter children's books.
They don't make you pay for the humor. It's up and down but they're trying to give you as many laughs as possible in 2 minutes. They are the most honest comedians ever.
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A good actor is someone who knows how to take the part and make it real and make it honest and be effective in it. If it's in a funny movie and as long as they are cast in an appropriate way humor will come from it.