Carrie Farrera advocates using your horn more in Utah. I agree people should use their horn more. However, it should be part of a defensive driving attitude and not considered a tool to let someone know you think they are stupid.
Apparently in Massachusetts you are required to use your horn to get a license. In Utah, we are taught to use the horn, though it is not a requirement.
I have to wonder if Massachusetts drivers have a highest accident rate because they are busy honking their horn instead of driving defensively. The Massachusetts accident rate in 2003 was 7.33 per 100 vehicles vs. 3.68 per 100 for Utah (www.ircweb.org).
So, by all means, “Honk your horn, damn it!” and get into an accident.