Out of all the hundreds of times I have warned someone "look out you doofus, you're about to hit me!" by honking the horn, I've had about two low-speed bruises.

Out of all the hundreds of times I have warned someone "look out you doofus, you're about to hit me!" by honking the horn, I've had about two low-speed bruises. Most of the time a collision was averted - I drive in city traffic, mostly. #anecdata