Humor is richly rewarding to the person who employs it. It has some value in gaining and holding attention, but it has no persuasive value at all.
“Emmitt Smith is a great running back. One of the things I like about him along with Edgerrin James is that neither one of them 'show out' when they run a touchdown.”
“No member of our generation who wasn't a Communist or a dropout in the thirties is worth a damn.”