"I work in a pretty busy restaurant, with Fridays and Saturdays being a living nightmare. On average, we have 250 guests for dinner on these days, which means we are packed until we close. We have a system that every waiter has their own area, but one of these is a lot bigger than the others, so usually there's two covering that area instead of one. We were understaffed on a Saturday night, and my manager decided to put me in said area by myself, as the others couldn't handle it. Which has happened before, and it's usually not a big deal. There's two round tables in this area, one with 6 and one with 4 seats, both tables had families on them.
As the evening goes on and the restaurant gets busier, so does my area. So my service slowed down a bit, and the tables had to wait for their food longer. I apologized and explained this to every table, and they understood and told me not to worry about it. Except for the father on the round table with 4 seats, who had been drinking quite a bit already and was obviously wasted. He started getting angry every time I walked past.
At a given point, when said table was waiting for dessert, apparently the father thought it would be a good idea to stand up and pour his his very full mug all over me. Exactly when I was serving the food to the family at the round table next to them.
At this point I had no idea what just happened, I almost shut down entirely, so I didn't know how to respond. Luckily for me, one of the bartenders saw this happening and stormed towards the guy at the speed of lightning to kick him out, almost literally. The only positive thing that came from this was that all the other tables felt so bad for me, they didn't mind about ticket times at all anymore."