I hate when I'm in a turning only lane and people turn on their turning signal.
It just irks me that people are generally awful at using their turn signals, yet people always turn it on when it's basically unnecessary. If we're in a left turn only lane, I know you ain't turning right or going straight, WHY ARE YOU SIGNALING.
Now I'm sitting here with your damn fukkin amber bulb flickering in my damn face like we ain't all going the same direction.