Went to a party where we knew no one

So friday we went to this party at Jeff's friend's Will's house. We got there just as Will was walking out the door. We than learned the fact that we knew absolutely nobody who was there. However: Jeff and Phil had already opened there beers so we were forced to stay there for a while. It was very strange, there house was clean. The things they owned looked expensive. I had no idea what the hell was going on. Anyway we ended up leaving fairly fast, but it was very strange being there, and thinking that some people go to parties like that all the time.