>>1794568Parked? Punch the mirrors folded if I have time, it both helps other cyclists get around the car and makes drivers think about why it got folded. I am planning on printing "I am a moron who parks in bike lane" stickers too, put them inside folded mirrors or just slap them onto the driver's window if I'm in a rush.
Just standing? Do a very hearty slap on the rear quarterpanel, loud enough to startle the driver. Works every time, they always get mad, no matter if it's a taxi that thinks they get to wait for a fare anywhere they want, executive drivers who think that Mr Big Cheese will fire them if they have to walk 100m and not 10 and just stupid fucks who see empty space and strive to fill it. A middle finger rised sky high as I ride into the sunset completes negative enforcement, hopefully resulting in them never attempting the same thing ever again.