Originally Posted by RadioGirl

I recently volunteered at a charity sports event, staffing a booth selling event-branded t-shirts, water bottles and the like. Not a position I would have considered to hold much authority. Despite the sign: "Water bottle $3" in large font in front of the bottles, people kept asking how much the water bottles cost. It was pretty quiet and I was kinda bored, so I started saying "They're $3 each but we have a special price of three for $10." Most people laughed, but one guy (native English speaker) paused and then said "Oh, well, then I'll take three." I quickly said that three would be $9 and there wasn't a discount compared to just buying one bottle, but he was clearly confused by it all. He bought two bottles, and I stopped making jokes.