YES! OMG, all through HS, College & PTA I needed to stare down at people's shoes so they couldn't read my eyes and face when something ****astic would spill out of someone's head and into the room.
I heard a rumor that if you do that pretty consistently, you can get pretty good at blinding the moron behind you. I'm trying to figure out in my smart-car how to make that a mirror setting I can go to quickly, but so far the car is still somewhat smarter than I am.
Pro tip: If you do succeed in blinding the moron, don't hit the brakes right away.