Just a while ago today, Zac Efron and the guys from the new movie, Neighbors, were chilling out with fans at SXSW. They were on hand for a Tumblr meet-up and autograph signing. Here, Zac displays his happiness with the dozens of fans who showed their smiling faces today. Were you apart of the meetup? How was it to meet Zac Efron and the rest of the Neighbors stars?