I've been driving for over a year and I haven't had to use my horn once, what the hell would you need a foghorn for?
It's not like it's funny to be obnoxiously loud and scare the stuff out of people IN TRAFFIC. You know, that place where everybody is in 3,000+ pound hunks of metal on wheels going anywhere from 0 - 65 MPH.
Anything that happens to you on the road when you use a foghorn is something you deserve.
edit:
I live in a city with a high population of idiots behind the wheel so I use my horn at least once every day. I need this.
destroyer nooo