I caught part of a public TV program about Jewish Americans last night. The program noted that more comedians are Jewish than would be expected given our numbers. They explained that by saying that the people you meet are less likely to beat you up if you keep them laughing. So Jews learn humor, especially self-deprecating humor, as a defense mechanism.
Remembering the thread on mild-mannered androgyne (which some also called a defense mechanism) and the remarks others have made on the high density of humor in this forum, I had an ah-hah moment. Of course, some of our humor is rather dense or, at least, heavy handed.
Good night all,
S