Wear a white undershirt, bring a magic marker, and say “I’m a white board, draw on me.”
It’s what I always did and people tend to get excited to write their names or say something crude or whatever (especially if they’re drunk).
Afterwards you can show everyone the shirt, or just throw it away
The lives of the saints is always good for low-input, high-impact costume ideas.
Once I wore a toga and an arrow thru my head and told everyone I was St. Sebastian.
Regards,
Shodan
Wear your normal cloths, or anything you feel comfortable in.
Get a ‘Hello, My name is’ sticker/badge.
Write “Enigmatic” on it.
Wear a black leather jacket. Memorize a few catchphrases:
Someone must have ripped the “Q” section out of my dictionary, 'cause I don’t know the meaning of the word “quit”.
I don’t need a compass to know which way the wind shines.
After all, I am a ticking time bomb of fury.
Looks like tonight the lone wolf rides… alone…
Frak-you-later, Frankenpuss!
Right now, I’m kinda like a powder keg, and you’re the match.
Don’t mess with the volcano my man, 'cause I will go Pompeii on your… butt.
Rage… taking over…
No, no, no. Rage… really taking over…
I’m a Pantera’s box you do not wanna open.
Please don’t correct me, it sickens me.
I’m a loose cannon. I’m unpredictable.
I always dressed up in street clothes and brought along one of the slr’s, papparazzi = easiest costume ever.
Declan
Don’t want to dress up? Go naked.
But wear skates and be a pull toy.
You could dress up like a big dick. In other words, just be yourself! 
I keed, I keed. Myself, I don’t do Halloween dress-up. I outgrew that after elementary school.
Go to the party, but don’t wear a shirt, socks, or shoes. On your chest, wear a “Hello, My Name Is…” sticker, and on it, write “Premature Ejaculation.”’
Mix and mingle with people as usual, and surely, at some point, someone will ask what you are supposed to be. That’s when you say, “I’m premature ejaculation.”
When they ask for an explanation, you reply,
“I just came in my pants.”
Wow…lots of no-funsies here.
It’s my favorite holiday. Candy, Costumes, women dressing up in things usually reserved for the bedroom, pranks, scary movies? Hell, throw in a present exchange, and you can keep Christmas.
Some good ideas in this thread, though, if you are just anti-costume. No one ever went wrong with an ironic turn of phrase/ pun costume. Also, if you have a resemblance to any celeb, character, or internet meme, now is the time to capitalize on it.
Or, why not step outside your comfort zone and just do something ridiculous? 3 beers in, I doubt you’ll be concerned about all the things your self-conscious about right now.
When I saw this thread, I thought I had deja vu… I was right. Leaffan had a thread about this last year too. Thought it looked familiar.
Myself, I love Halloween. Candy! Disguises! Candy! Parties with my friends! Candy! More candy!
go naked. keep asking people to guess who you are.
you won’t have the same trouble next year.
That’s a requirement for being a Doper, I think. Hating doing things like dressing up and parties.
I myself LOVE getting dressed up on Halloween!
then by your own definition you’re not a Doper.
Canucks keep track of each other, eh? 
Well, at least I’m consistent. :smack:
We don’t try to keep track of each other, but it’s pretty hard not to. Although it is a huge country, there are not that many of us, so we all know each other.
There must be a store selling Halloween doodads somewhere near you. You should be able to find something appropriate just to pin on your shirt or carry in your pocket. No dressing up required, but it shows people you’re making an effort.
Yeah, some blood read eye-drops should do it. Anyone know how to make that? Food coloring and water?
You’re date can come in a Hazmat Suit. Quite the couple…
I would imagine that Leafan owns quite a number of jerseys, so that probably wouldn’t be an issue there. Plus fake bruises are pretty easy to make with just ordinary blush, eye-shadow and lipstick. (I remember freaking my friend’s mother out once when we were kids)