I know what I HOPE I would do if someone pushed me.
You know how kids flop? Well, I would look behind me to make sure everything is safe and would fall flat on the floor! And I'm sure "my neck, my back, my neck and my back" would be hurting. I've often thought about doing this when a Lexus or BMW does something stupid in front of me on the road (continuing on and letting their dumb action cause a wreck at slow speeds).