I love my horn, it's so useful to honk at the other idiots around you so they'll wake up pay attention. (Becuase let's be honest here, there are a LOT of stupid people driving around these days) I don't use it quite as easily as the person you described in your story but I definitely use it sometimes. Just the other day, I pulled up to a red light behind a police car. The light turned green, and he didn't move. I gave it a few seconds becuase I thought maybe he hadn't noticed that it had turn green. But after a while it was getting quite annoying so I gave my horn a tap. Finally then he started moving, but I looked at him again and you know what I noticed? He was talking on his cell phone!