Look, I tried my hardest not to post it, honest, ....but..........don't forget....
Robert Ironside invented a wheelchair.
It was based on Benny Hill's principle, only without understanding circular wheels. It was a very poor chair! It was called the "bad back chair", and the theory was it would work like a van turning, and generate laughs at zero angle of attack by the bad guys, without the other side or a policeman feign the appearance of sympathy.
I was forced to do it, It's not my fault.
At least I didn't mention the 'the bottom generating pressure with a slow drag.
I know, I know, Back where I belong.......