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.
Are we to say that any individual who's on steroids that has an angry moment is due to steroids? What about the individual who gets angry and kills someone who's not on steroids? What do we blame it on now?
I do have a blurred memory of sitting on the stairs and trying over and over again to tie one of my shoelaces, but that is all that comes back to me of school itself.