Has anyone seen the episode where Mr Garrison invents his own version of the Segway transporter? It becomes the only way to travel and he's getting wealthy off it. The thing is, it requires you to sit on a long "protrusion" and mouth another in order to make it go. Someone discovers it would still work without the protrusion. Mr Garrison was shocked that anyone would want it removed.
Eventually the government shut him down because he had a monopoly on it.
It was unbelievable.