Lately I've been wishing my bike had a horn on it so I can honk at all the cars that nearly run me over, or all the people that don't walk in straight lines on the sidewalk. And now you're thinking: "but bikes don't belong on the sidewalk!" Indeed, but crusier bikes certainly don't belong on the street.
If I can't have a horn, I'll take a handle bar bakset. And instead of honking at people, I can throw things at them!