They will undoubtedly be found standing in packs at their house's annual Halloween party scanning the crowd for girls. Their costumes vary, usually taking form in a hilarious group outfit, something sports related, or literally whatever they managed to pull out of their closet last minute. 

2. Sexy [Insert Noun Here] Costume

This can range anywhere from Sexy Police Officer to Sexy Disney Princess to Sexy Hazmat Suit. Sure, it can get a little ridiculous sometimes, but Halloween is a day where you have the chance to be anything you want. It's understandable that some people like to dress in a way that would be, um, slightly inappropriate in an office setting. More power to you though, Halloween only lasts one night.

The naive, first-time party host will undoubtedly think it's a good idea to leave candy out for their guests. That is, until they wake up the next morning with melted candy corn fused into the carpet and Reese's cups smeared on the wall. Sure college kids love free food, but they love alcohol and drunken shenanigans even more. 

These people should be put on display at a haunted house. They plan their outfits months ahead, spend actual money at costume shops and deck themselves out in fake blood, masks, face paint and more. They might seem a little out of place at a frat party, but props to them for embracing the Halloween spirit.

It's 2014, there's no place for racism or cultural appropriation in today's society. However, in an effort to make sure that everyone's costumes are politically correct, some people go a little overboard. These are the kind of people who believe it is their job to tell you that "your nurse costume is offensive to healthcare workers everywhere because you didn't go to medical school and therefore you are unfairly benefitting from their hard work." Just use common sense this Halloween and know the difference between what is funny and what is offensive.

When you keep in mind that Berkeley's campus is surrounded by high schools, grade schools and families of young children, it makes sense that you are going to run into a couple of youngsters this Friday carrying around enough candy to make their dentist quit. Luckily their bedtime is usually before college kids even start getting ready to go out, so there is usually very little crossover. If a person under 5-feet-tall tries to get into your party though, you might need to start calling some parents.

Even though Halloween is inarguably a holiday for people under the age of 30, there is always a chance of spotting a couple of costume-clad adults walking the streets on Halloween. Let's just hope that they're going to an age appropriate festivity because taking Jell-O shots with someone your aunt's age is usually a little bit awkward and sad.

8. Vandalism 

There's just something about Halloween that truly brings out the criminal in everyone. Be prepared to see houses covered in toilet paper, smashed pumpkins and vulgar words spray painted on formerly innocent Halloween decorations. And remember, it's not illegal unless you get caught.

Yes, I'm sure the black liquid in those pumpkin-shaped shot glasses looked good last night, but you'll be regretting those unidentified drinks tomorrow morning when a sugary hangover from hell hits you in the middle of your two-hour midterm review. 

10. People Who Legitimately Forgot About Halloween

Coincidentally, Halloween tends to fall right in the middle of midterm season. And, let's be honest, despite all the fun activities that are undoubtedly going to unfold this weekend, we are all college students with legitimate responsibilities. Sometimes you have to forget about childish holidays and get some serious work done.Or you could throw on a pumpkin costume, put that essay outline in your to-do pile, and go party like its 1999 because you only have a few more good Halloweens left. 

Now go enjoy this Halloween weekend and be safe kids.