xkcd artist Randall Munroe is bombarded by playpen balls after they dropped from the ceiling of 10-250 during the LSC-sponsored xkcd lecture. Eric D. Schmiedl—The Tech May. 8, 2016 Facebook Twitter Reddit Print xkcd artist Randall Munroe is bombarded by playpen balls after they dropped from the ceiling of 10-250 during the LSC-sponsored xkcd lecture. Eric D. Schmiedl—The Tech