I presume that is an act of trolling?
Stating that people who find it funny "must not be intelligent" is a ridiculous thing to say. In fact, I'd put it at more offensive than the original joke, and for this reason.
The original joke is, just that, a joke. However, by the tone of that, and your subsequent posts, that statement is something you BELIEVE. That is a very scary thing, indeed.
I would suggest that it was an highly unintelligent thing to post.