It doesn't take a stable genius to know Trump is as dumb as a rock.
When he actually opens his pie hole, or tweets, his ignorance is so pronounced that people feel compelled to mock him.
Trump's recent announcement that planes are far too complex to fly and pilots have to be computer scientists to fly them, comes after a second Boeing's 737 Max 8 crashed - killing all aboard - in the last six months.
Let's unpack that statement for a moment.
a) Is Trump suggesting we go back to the Kitty Hawk and the Wright Brothers? Doesn't get much simpler than that.
b) Did some poor fool try to explain the plane's new navigation system to Trump who became overwhelmed when a reporter asked him about it?
c) Trump's comments about modern planes quickly drifted off into a rant: "I see it all the time in many products. Always seeking to go one unnecessary step further, when old and simpler is far better."
This recent rant picks up Trump's ongoing theme of simple is best. Like his plans for a medieval wall on our southern border, or his love affair with the wheel.
But the biggest reason Trump is mocked is because he regularly lies, and demonstrates a complete lack of understanding of the world around him. I have a pug that knows more about other countries than our Cheeto in charge does.
His ignorance is really appalling when it comes to the Constitution and the functions of Congress and government agencies.
How could Americans not mock him? The rest of the world does too.
Time for me to walk on down the road...