These pictures from a car parked here at work .. the Chinese bumper sticker equivalent of ‘back off!’. My colleagues tell me the second picture (same car) is more rude than the first one, roughly translating into ‘I was a bad boy at school so watch out for me!’. To look up these characters on my translator is a mini-project : I have to scribe it the right way with the stylus, and some of them are just impossible to get right.