It was Richie's 16th birthday and he had thrown a huge party, which included lots of alcohol. He invited all The Losers Club and some other random people from school. Stanley didn't really touch the alcohol since he hated what it did to people. He peacefully sat outside in Richie's garden to get away from the noise when two drunk people had come up to him. First they were just talking until it had randomly turned violent and one tried to swing at Stan as the other held him down.