How about people who "graze" their way through the produce department.
And the bulk foods. Each bin is treated like a sample tray by some folks and their children.
I don't resent the stores at all, I do resent the thieves for forcing the stores to react.
I did have a problem with Wal-Mart when I took a computer program home and there was nothing in the box. I took it back and they acted as if I were the thief. I pointed out that they had taken my money and given nothing, and if there was a crook in the crowd it was them.
They didn't see the humor in that, and continued to treat me as if I had a semi into which I was loading their corporate profits and personal wages.