I am running a small restaurant for three years, I met so many people who did shitty things, like steal the money box for disability people, steal the tip from a tip jar, steal the football for promotion during world cup, asking something for extra and won't pay, mad the story for a free meal, like " I found a tooth in my food, and the tooth broken my mouth, I got blood on my whole face, my child be scared, and you must do something, otherwise I will report you" and like arguing the price even the price be put on menu board for everyone, but they still think you they can get more cheaper price if they arguing. ect.ect. so many. I was wondering why ppl doing this. This is the harmless thrill or it is actually a deeper problem.