What was the most petty 'crime' you committed in school for which you received the stick/dap or the like ?

For me it was only getting 15 out of 20 questions right in an ad hoc geography test. The teacher told us anyone getting less than 17 would get the stick and he was true to his word.

Secondly, me and a schoolmate committed the heinous crime of running down a school corridor to get to the next lesson.

Life was brutal then !