Please report dangerous drivers to the police - Roadsafe. Report to plod, not just whinge here.

Hanged*

Hung is present tense. If you hang someone, you don't leave them there.

Hang on, I don't want to get too hung up on this, but ...

http://grammar.about.com/od/alightersideofwriting/a/hangedgloss.htm

'Hung' is certainly not present tense, unless I don't get a joke that may have been intended, or you're talking about a different language. :)

Anyway, it's one of those rules that you just have to get the hang of.