What is the rudest thing a customer has said or done to you at work?

I used to work at Taco Hell(Bell) on the drive-thru and I've been cussed at and threatend. I was told to "go f#ck myself" and to "shove a taco up my a$$ !! It was brutal then this one lady said that we were all dumb and we needed to go to school to learn how to take orders..we've had food thrown at us and we were called"fat es who piss on tacos" I'm glad I don't work there anymore..