Well. Have you done anything really naughty?
The best I can offer to this thread is accidently breaking a window at school. I was (as you do in year 6) throwing stones on the roof with a mate when I sort of... missed. So I came up with a really good plan... we ran and hid in the toilets. But we got found out.
I bullshitted by way out of it though. Can't remember how though, twas years ago.
Type 'naughty things' into Google Images and you get this. What is so naughty about that?