I became friends with one of the managers at Panera. One day as I was giving a cashier my order, he told her to give me the same discount as they give to firemen, police and paramedics, i think. He just chose this discount as it was an easy button to push on the register. Well this cashier really thought I was a fireman. I'm not. So for the next two years this cashier gave me the discount. Even if she wasn't serving me, she would go out of her way to tell the cashier that was helping me, "He's a fireman, give him the discount". It snowballed into such an awkward situation that I didn't know how to get out of it. Luckily that cashier eventually transferred to another store and I now happily pay full price.