If you can't say you had previous plans (perhaps outside the house), you can always say you're not feeling well (and perhaps that a bad virus is going around your school/office, or you might be contagious) or claim a migraine or bad menstrual cramps if female.

If this person and their friends are really ones you don't want to have relationships with, you'll need to do something like those things several times to get the message across without being rude. Some people can be pushy though (...you might not want to hang out with them for just that reason).

Keep being very pleasant but BRIEF in interactions you have with them in the future though, to indicate you're not "dissing" them or treating them badly. That goes a long way towards neutralizing bad feelings that might come up anytime. (Don't be so pleasant or long-winded if you don't want to give them the impression you'd like to go further though.)

I personally don't think "parties" are the best way to meet people and have enjoyable times, especially if you're not a heavy drinker.

There are lots of people like that who enjoy *other* kinds of social interactions though, often more meaningful and less shallow ones. If you realize you're that kind of person, you may want to be sure you extend yourself in a *few* situations out of your comfort zone but also realize that's just not the way you like to relate to people. You might be interested in some of these links about that sort of thing:

http://en.amerikanki.com/common-myths-in...

http://www.metro.us/newyork/lifestyle/we...

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If 60+ people were invited, the host probably won't even notice you aren't there. Just say you were tired.

Don't go.

That's how.

Why not just go to the party? You'll meet new people, maybe make new friends. If you don't like the scene, you live next door, so you can easily go home.

Socializing was one the best aspects of high school, to me.

Tell your friend met an accident and he needs help

don't worried,at first time we are know any body but talking about person then i know every one.So you are joining this party and never thing you are alone.

say your ill.

It's in half an hour and I REALLY don't want to go. But I have no excuse not to. I live next door to the host :P over 60 people were invited and I don't know 90% of the guests. I just really don't want to be put in any sort of social situation. Idk what to do.