Be driving on a 2 lane road. I'm in the left lane (the fast one). No one is in the right lane (the slower one). Some A-Hole pulls out in front of me into the left lane, that I'm in, as if they are in some kind of massive rush. The speed limit is 55 and they decide to go 35. Man, that just really pisses me off.
This isn't just an old person thing. Young drivers and old alike do it. I actually think young drivers do this a little more. Older folks seem to know what the slow lane is for.