Teaching blooper...

So today I came to school and walked into class. Everyone was normal, no big deal. Then I looked up and was shocked. I saw on one kid's desk a bottle with what looked like beer in it! I'm thinking, "what's he doing bringing beer into class?" The bottle was shaped like a beer bottle and the insides looked like beer (even the foam!). So I said, "____, no beer in the class." (Take into account that I don't know the legal drinking age in China. Many countries it is a lot lower than America. These kids are between 18 and 22 years old. And just yesterday he told me he liked to play pool and drink beer.) He looked at me puzzled and then the class just laughed.
I had to investigate. So I went over to his desk and opened the bottle to smell it. It wasn't beer. Just a carbonated, funny, "beer-look-a-like" drink, in a bottle shaped like a beer bottle! OOPS! Another mistake to add to the list.
So next time your in a foreign land and see a kid sitting at his desk in school with a bottle in hand...remember to ask what it is first!