[cloudmountain]

Humor/amusement is an intellectual activity.
GENERALLY, people with low I.Q.s don't have the great sense of humor because of their low I.Q.

What would be the excuse for some FReepers? Maybe hitting a sore spot?

[LesbianThespianGymnasticMidget]

One of my favorite humorists sees it a little differently.

https://www.scottadamssays.com/2017/07/09/people-who-cant-recognize-humor-literally/

I fully agree some people don’t have the mental capacity to understand more complex humor but some do not even get something as simple as pratfalls.

I think Scott is on to something.

The kind you point out need these explained:

Two hydrogen atoms walk into a bar.
One says, “I think I’ve lost an electron.”
The other says, “Are you sure?”
The first replies, “Yes, I’m positive…”

or

A neutron walks into a bar and orders a drink. Upon being asked the price, the bartender responded, “For you? No charge.”