Back when I worked for a popular coffee shop, one of my supervisors told me a great story about a lady who clearly wasn't grounded very well in our modern reality.
This lady comes in with her child, orders a drink for herself and a hot chocolate for her child. The hot chocolate gets finished and put on the bar for the child, who comes up and accepts it and, being a little cutie, squeaks "Thanks mister!"
Lady, standing behind her child clucks her tongue and says to her child, "Now now, we don't thank the help."
My co-worker looks at the kid, says "You have a wonderful day sweety." Then looks at her mother and says "I'm sorry maam, I'm going to have to ask you to leave the store now."