I was a barback for 3 months at a VERY up scale hotel/restaurant/bar a year ago. These people were astoundingly rich, we charged people $8 a beer (minimum) and $19 for a shot of Patron and they would order them by the dozen. They thought they were invincible.
I was working one evening and it was particularly busy and the service was incredibly slow, like a “wait 10 minutes for the bartender to even glance at you” slow. Anyways, a guy comes up to me asking for another drink. I explained to him that I could not serve him because I was only a barback (it was easy to mistake people because we all wore the same uniform). It was very loud and what I thought he said back was “Can you just get me a drink of water?” So, I filled a glass up with water and gave it to the gentleman (probably around 45ish and I was 20). He immediately started screaming at me “FUCK YOU I SAID MY DRINK TASTES LIKE WATER GIVE ME ANOTHER DRINK!!” and threw the glass behind the bar hitting one of the female bartenders in the back of the head. All of the bartenders went silent and out of nowhere one of them climbs over the bar and tackles the guy that threw the drink. Security dragged that asshole out of the bar never to be seen again.