I can't believe I'm saying this, but I agree 100%. I ride on the roads a lot. On the weekends, I'll be out for 3-4 hours each day. Every ride, without fail, usually has a 'horn tapper'. As cyclists, there's no point in going out of our way to rage. So the driver tapped his horn. A jarring experience when you're on a bike, but drivers don't know how loud their horns are. They don't know better. If a cyclist does anything except wave and smile, they're just fueling the fire. It sounds like this one went way over the top; now we have another old person who's pissed at us. Just what we need. One time, a driver pulled up next to me on my bike and started screaming about getting off the road. I smiled, told them one of their brake lights were out, and waved. The shocked driver thanked me profusely and sped off. Of course, their brake lights were actually fine. Using one's brain to outwit an angry driver is much more satisfying than a middle finger.