Well, I haven't exactly studied aerodynamics, but I have stuck my hand out the car window a time or two and moved it around like it was an airplane. I think I understand it just fine.
I completely understand Trump's fondness for, or at least reliance on, social media. He can't trust the lame stream media to put his point across without stabbing daggers in his back, so he has to get his point across somehow. Since this is the 21st century, and social media is well accepted throughout our society and is a vital communications tool, why not use it to his advantage?
Before you eviscerate Trump for not acting like the POTUS, you might want to recall his most recent predecessor, who himself had a fondness for guest appearances on late night TV talk shows.