Or worse.... Most of my friends have extremely low opinions of cyclists and their reasons are valid - way too many cyclists utterly disregard red lights, stop signs, traffic lanes, etc.
On the other hand most motorists don't know the rules of the roads, and that's something I've noticed while driving.
Another example - I was honked at yesterday while on the return trip on my bike. The situation was I was turning right at a yield sign, so I rolled through it at ~5mph. While I was turning there was a car in the other lane, approaching the intersection, and his turn signal was off. I proceeded to enter lane 1 while he was in lane 2 and a few hundred feet back. A few seconds later he honked. I turned my head around and he was now in lane 1, but still a good distance back. Now, I wasn’t watching the whole time - I was looking at the road in front of me as soon as I entered the lane, but the only two possible scenarios were
1) He indicated after I had turned my head around, at which point I was already in the lane and had right-a-way (I was watching his direction until I had overtaken the lane, but he switched lanes anyway
2) He failed to indicate and switched lanes after I had overtaken the lane
In either scenario, he switched lanes in an intersection, which is illegal by itself.
Either way, I can’t imagine a scenario where I actually did anything wrong, as all I did was enter into a lane that was empty at the time, and I was watching him drive in the 2nd lane until the time I was fully into his lane.
FWIW, failing to indicate (turn signal) is a personal pet peeve of mine as I believe, albeit not based on evidence, it is the root cause of most accidents.