A bit of a different story but of the same vein, my wife used to waitress in college. She worked at a fish-n-chips house in a nearby town that served beer battered fish. One day when she was working their, a family she simply described as a "wee bit granola" came into eat. The parents were very mindful of what their children were eating and ordered the whole clan each a salad with some freshly prepared, non fried fish on it. As my wife took the order she asked them what they would like to drink. The little boy was screaming "Applejuice! Applejuice!"
Now normally, they didn't carry applejuice but on rare occassion they did have some. Briefly when she arrived that morning for her shift, she noticed what appeared to be a pitch of applejuice in the beverage refrigerator and made note of it. She happily replied to the couple that they did indeed have applejuice and she would gladly bring some out for the kids who both were enthused by the news.
My wife hurriedly submitted the order on this very busy day and drew the drinks for the family. She returned to the table, placed the drinks down and went back to go pick up their order. A few minutes went by when the father anxiously went up to my wife and told her she was needed at their table immediately. She told him that the food would be up soon thinking that they were growing impatient. He then said "no" we need to see you at the table.
Once at the table, the father asked my wife, "do you know what you served my kids?" She replied, "applejuice." The father shook his head and said "no, you served my son and daugther flat beer!" It was at that time that she looked around and saw that the little boy was a bit loopy.
Apparently, the chef would put the last of the keg in a pitcher and put it in the refrigerator for his beer batter. It had the exact same look of applejuice and my wife never checked the smell. When she served the drinks to the children, the little boy picked his up and downed it in a heartbeat. The little girl, ever so discerning told her parents that something didn't smell right and that's when they discovered it was beer. The mother grabbed the little boy and made him throw it up.
My wife was apologetic to the point of tears and comped them the entire meal. The little boy left with his first buzz!