If you have to obtain your taste in one or more of the following from other people, you are in turn NOT original. (nor your own person for that matter) :
1. guys: this includes taking guys, taste in guys from other people.
2. music: if you change your musical taste based on the people you hang out with that day.
3. friends: having friends only for the idea of name dropping or 'knowing everyone in a place'.
disclaimer- just because you're friends with someone on myspace/facebook does not mean you know them, are friends with them, or that they know who you are.
4. clothing: if you wear things that other people wear with you're around them, congrats. i.e. band shirts around people who wear band shirts, or shows where said shirts will be warn.
5. your personality: if you're a 'badass' around 'hardcore' kids, if you're a drunk when downtown, ect. anything that isn't really your personality, but more so just something you put on to feel wanted in a certain place.
5. every single other thing that makes up your personality that isn't on this list that you change around certain people - mannerisms, slang words, personal choices.
..and - end rant.