Your in the car at a junction turning right (left for you) from a smaller road onto a bigger one. Someone from the main road is turning off onto your road. Then the loathsome degenerate fuck cuts across your lane, because A: they can't drive, B: they're a dickhead. Then, THEY GIVE YOU, THE STINK EYE (best American phrase ever). If you want to elicit a swiftly mouthed "fuck off" from me, then that's scientifically the best way to go about it.