I once tooted a spandex-wearing, wobbly cyclist who nearly became a hood ornament because he was swerving around all over the place (bike lane and darting into my lane). He became instantly enraged and was screaming obscenities at me and highlighted it with a pompous:
"I am allowed to use the road, too!" 
"I am allowed..."? Give me a break. Sounded like a 6-year old.
When I pointed out that he doesn't pay registration or any form of road tax he got vicious and swung a spandex-covered foot at my car. I explained how that was not a real good idea...
Road cyclists in Australia have a terrible reputation as a result of ass-clowns like that guy. They're
hated by the general motoring public!