People here drive slow...like 35 in a 50 all the freaking time and even slower if it starts to rain. Oh, and they have no clue what a "passing lane" is.
They pull out in front of you and instead of stepping on the gas go about 10 -15mph for a good 1/4 mile...when the next car behind you is at least 1/2 mile away and they could have waited.
On roads with 2-3 lanes going each direction they will be in say the left lane and wait to decide they needed to make a right at the intersection they needed to turn at, and just stop in the middle of the road almost causing a pile up trying to get over.
A few times a week I see some idiot approach a steady green light and stop to stare at it = WTF.
And the list could go on and on, but these are some things I see almost every day that annoy the hell out of me