Oh I can tell you from personal experience that "tootling the horn" is not going to work, nor is shouting the warning of "hai hai"...but blasting past thier drivers door and kicking off thier side mirror to a warning shout of "if you ain't using it, you won't be needing it", usually works wonders.....
I also love the part about not letting a dog become entangled in your spokes.....
...and I have painfully met the "skid demon"...he was lurking on a wet pedestrian crossing where the nice shiny painted white lines are....