i personally just hate when people in front of me don't give their signals when changing lanes, theres a reason.
i would be trying to pass from the left lane onto the right to pass the bitch in the left lane, then while trying to pass her/him they switch over to the lane i wished to change to, and I'm always like WTF, such a simple thing as giving your signals yet this motherfucker cant do it, and im always afraid that i will hit one of these mofo's
edit: plus im always afraid that i will hit one of these mofo's