As someone else mentioned, the ones that bug me are the drivers who stop when they don't have a stop sign, and wave me through
my stop sign.
Tuesday, I came up on a woman on a Specialized road bike. She was moving at a good speed so I didn't pass. We got to a stop sign and she unclipped and stopped. Foot down on the ground. A car stops and waves her through. She got a little flustered, waved the driver through angrily, and said, "I'm the one with the stop sign!" The driver took off, seemingly miffed, judging from the exhaust noise.