True story:. I'm a techie and a nerd and I've always been near the top of my class. One of the things that I enjoy is it really dry humor. And one of the ways I can get a laugh out of people is by stating something that is obvious as though I just figured it out. Or intentionally making massive understatements. Like if I just broke my arm and I would say something like, "I have found that breaking your arm is unpleasant."

When you say it around people who are generally quick witted, it takes a second for them to grok what you're saying and then they figure out that you're cracking a joke and then they smile, usually laugh.

But years ago I found myself working as an aircraft mechanic. And my cohorts whom I rode around with were very blue collar in language and culture, and several of them had been chosen as "mechanic" because they hadn't performed that well on an aptitude test.

So one day I made one of my famous observe-the-obvious funny statements, and one member of the group whom I'm pretty sure was one of the low aptitude scorers, looked at me with obvious disgust and said, "You must be one of the dumbest people I've ever met."

He didn't understand why I started howling with laughter.