Well outside of the "Gross" factor that is predictable by these comments.. this dude reasoning is absolutely bollocks. Yeah sure. "Tried to help". Heh. PEOPLE like this irritates me to no end.. much more so than the "Evil" people doing it in the first place.. just say you don't want to be a target and move on. If you want to help discreetly, maybe snap a picture in secret and show it to the police or whatever, because sure as hell this school teacher is absolutely useless..