Jolly coppers on parade

Here's a quote I overheard when I was watching fire engines the other day. Three youths had approached one of the policemen on duty at the scene of the fire:

POLICEMAN: Shouldn't you lot be in school?
YOUTH: Nah, I go to college, innit?
POLICEMAN: No, it's 'I go to college, don't I?', not 'innit'. We know you go 'in it'.

Now that's the kind of sentences I'd like to see the law handing out. Instead of jail time and community service, you could be ordered to use gramatically correct speech for a period of time. I think I'll pop down Scotland Yard later on and present my ideas.