Humor is very very risky particularly for a candidate unless he's been in so long that it just doesn't matter and he's not running for president. But it's just that people are so sensitive and so touchy and you're just going to upset somebody without ever realizing it.
I never blame myself when I'm not hitting. I just blame the bat and if it keeps up I change bats. After all if I know it isn't my fault that I'm not hitting how can I get mad at myself?