When your driving in the dark and every other fucker's headlights are really bright, so you assume they've got their high beams on. Your squinting like a bit of a fanny, so you flash them to switch their high beams off, but they didn't have their high beams on, and then they flash you back with their high beams and you squint like an absolute fanny and nearly crash your car......Fanny Eyes.
I hate driving in the dark with these fucking fanny eyes.