I'm curious

Well, I never saw those. Hence, the lack of context.

No, you're just completely unable to recognize a joke, like most people on this website.

No, that's not it. Context is everything.

No, basic mental skills are everything

Which is heavily stunted without context. Such as the dilution of sarcasm over text.

Just admit that you're blind to the obvious.

Why don't you just admit that it takes more than intelligence to make things obvious.(hint: context).

Sure in some scenarios, what you're saying is of course correct, but the thing is, in this situation, you were just a bit clueless, that's all.

How so? Do you not believe that this kind of stupidity is really possible?

It is by since the joke is old and overused is it actually a dumb person?