One of my college roommates would, whenever some guy cut us off or tailgated us or something when we were driving somewhere, announce, "There goes a man with a small penis." It always made me laugh, and laughing at other drivers is, IMO, infinitely preferable to road rage.

(Also I'm from Los Angeles, so I drive like a maniac sort of by default. By LA standards I am gentle as a lamb, driving-wise, but I still had to relearn how to drive when I came to Seattle because I was WAY too aggressive. Turn signal does not equal declaration of war, what?)