My wife and I have an English language center here in Vietnam.
We teach young Vietnamese kids how to speak English. Today during summer camp I came downstairs into one of the classrooms that the students had just entered to find this on the whiteboard.
I was upset, as it's an uphill battle to try and not only improve these student's English but also their behaviour.
Moreover, my wife was furious. She made all the students come and see the board and asked the person who did it to own up to it. Silence. So, she said, we have one hour left in the class, if the person who wrote this doesn't tell me they did it, and I find out who it was, then, they will not be coming back to our school.
Time passed. We slipped our daughter into the classroom to listen to see if anyone was talking, but still nothing. As we worked we chatted about who we thought it was. Some of the usual suspects names were tossed about by us. We were pretty sure, based on body language and past behaviour that we knew who it was. I went on with my teaching and then with about ten minutes left in the class my wife called me outside. She looked shocked, and then she told me, that it was a very small seven year old girl. I was shocked too, I said, "what did she say?" "Why did she do it?" She asked to talk to my wife, she said she did it, she didn't know what the word meant but she thought it must be a nice word because it was written all over the desks at her elementary school. My wife told her it was good that she had confessed to writing it, explained why not to write it anymore and sent her back to the class.
The moral here is don't be too quick to judge an event, I'm glad we didn't as blaming the wrong student could have caused a lot more stress than necessary.
Peace and happiness from Vietnam! 
