ShotgunDave,
While crazy is an adequate description, there are some others as well.
Talented, disciplined and professional are a few that immediately come to mind.
I've ridden drill team type exercises on a motorcycle. You have to be very talented and disciplined to do that and walk away. If you do not follow the sequence exactly, there are at least 2 riders there are down when you do things like ride towards each other, touch front tires and then veer off. Give it a try sometime and let me know your results. Please wear all the safety gear though, as there is a good chance you might wind up on the ground.
Yep, we have done some of that crazy stuff - at least that's what it appears like to those that have never done it.