But Youngman either divorced her like a normal Holly-weirdo, lived happily ever after with her and thanked her for her inspiration of that joke which made them both a fortune, or some combination of the two. He did NOT kill her!
However, again, he was a comedian. Comedians whatever it takes to get a rise out of people. Rodney Dangerfield had a wife who actually loved him, no matter what he said on stage.
For most people, their true mindsets leak when they try to suppress it.