My friend is having a Halloween party at his huse. I've been to parties at his house before. The place is usually pretty crowded.There's one table for beer pong so only 4 can play at a time. Usually everyone is drinking or talking. I just walked around , till I saw someone who wasn't doing anything, had a conversation. Talked till the conversation petered out or I ran out of things or person had to leave to say , and left and repeated this. Any suggestions?