You're stopped at an intersection and want to turn right, but a car is racing towards you from the left, you wait, the driver is not signaling so you assume they are going through the intersection and at the last moment they turn right on your street just inches from you. So, you could have turned moments earlier, but bad driver didn't feel like signaling, so I give them a signal as they turn by me.

Or how about merging traffic, most people merge one car at a time, but dic%head thinks he needs to go out of turn.

There's more, later.