Waitress kept their water glasses full.
Paramedics treated a server at a Red Lobster in Fairview Heights on Friday after a customer threw a water glass at her head.
It happened at the Red Lobster in the 110 block of Ludwig Drive around 2 p.m.
A witness said she saw three female customers get mad because the server was filling up their glasses with water too often.
According to the witness, as the server walked away one of them picked up a water glass and threw it, hitting the victim in the back of the head.