I never worry about people not taking my work seriously as a result of the humor. In the end the comic's best trick is the illusion that comedy is effortless. That people imagine what he's doing is easy is an occupational hazard.
If one tends to be a humorous person and you have a sense of humor the rest of your life then you can certainly lighten the load I think by bringing that to your trials and tribulations. It's easy to have a sense of humor when everything is going well.
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Political correctness? In my humor I never talk about politics. I was never much into all that.