How can I find out how to celebrate this "Halloween" without coming off as a clueless buffoon, you may ask? Not to worry, I have a few little tips for you right here:
1) Remember the tradition
Halloween started as a pagan ritual in which people dressed up in the scariest outfits possible and danced around a fire in an attempt to frighten evil spirits. This is NOT the tradition that you should remember, however.
Halloween today is just like any other holiday: the goal is to get drunk and get laid. What makes Halloween different from other get drunk/get laid holidays (St. Patrick's Day, New Year's Day, Martin Luther King Day, etc) is that one part of the original tradition is retained: the costume. However, do NOT dress up in a scary costume whatever you do. It makes you look like too much of a traditionalist and also tends to freak people out, which may make them choose not to engage in drunken sexual relations with you.
2) Stick to the unofficial costume code
If you are a single woman, your options are the following: slutty nurse, slutty cat, slutty rabbit, slutty devil, slutty witch, or prostitute. If you are not comfortable with any of those, you must dress up as a nun (which most people probably already think will be your future career).
If you are a single man, you must dress up in whatever costume gives you the best chance of getting laid. Creativity and uniqueness generally make you stand out from the crowd. Group costumes also attract attention, especially ones that women will consider cute. Dressing up as the cast of "Happy Feet" (penguins) might be a good choice. The drawback to a group costume, however, is that you must fight off your similarly-dressed "bros" for women that fall into your clever trap.
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If you are a married couple, you have to dress up as two things that go together, such as salt and pepper shakers, a plug and an outlet, or a prisoner and a warden (the last one may hit a little too close to home for some of you). NO EXCEPTIONS.
3) Don't dress up as anything related to a tragic event unless it's been long enough that it's funny
If you dress up as Alexander Hamilton with a bullet wound or a deformed Chernobyl victim, people may consider it rather humorous. The first of those two examples happened over 40 years ago (the general cutoff) and the second happened over 20 years ago (the cutoff if it happened in a different country). A tandem costume of Catherine the Great and a horse would be a particularly big hit if you could pull it off. However, if you dress up as Steve Irwin with a stingray attached to your chest, that is NOT FUNNY! It is WAY too soon for that, you insensitive prick!
4) Three words: "Where's your costume?"
This is a hilarious joke that never gets old. You can always be sure to get a lot of laughs by making this comment or something along the same line when the person really is wearing a rather scary or disgusting costume. Is your boss's wife dressed up like Frankenstein? Is your friend's mother wearing an impressive Linda Tripp outfit? If so, then insinuating that this person does not look any different than normal is a guaranteed knee-slapper.
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You: "Where are your costumes?"
What if someone is extremely sensitive and gets offended, you ask? Easy. Just say, "Come on, don't be such a Hallo-weenie." Everyone dreads being called this, so on October 31 it is an easy out that can serve as an escape ladder after any inappropriate comment.