Costumes -

...why when I was your age I put on some old jeans, a flannel shirt, put freckles on my face and went as a HICK. We didn't go out to some Hall-o-weener superstore and pay 39.99 for a crappy piece of black crepe with a little red color thrown in for good measure! If you want a costume you can get your butt into our closet and look for goofy clothes from years gone by. Can't find it there? Then check garage for the Halloween containers - I know that last year's costumes are still in there, and they're still good. So what if you've been a Jedi for the last 5 years...no one cares!
You want a really good costume? Strip down to your tightie-whities, put a red blanket around your neck and go as Captain Underpants. Funny and cheap. Besides, you're 17 now. That's a bit too old to go around begging for candy. Shouldn't you be snogging some senior chick at a Halloween party tomorrow night?