When a car passes me after riding super close my bumper, I just wave at them ...
...with my eyes on the road of course.
Occasionally, if the road ahead is completely clear, I quickly look as they are passing and give them a big beautiful (sarcastic) SMILE 😀👋🏾 along with the wave... as they are yelling, cursing or whatever at me.
Happened today as I was minding my business, driving the speed limit.
Car comes from way behind switching multiple lanes then got behind me speeding. I slowed down more. 💁🏽♀️