Black Flag playing a kids show? What's that all about? What does it mean to be a kid? Black Flag will be doing something for the band's younger fans next week.  The punk veterans are scheduled to stop in Chicago on June 17th for a gig at Reggies.  But before the main show, Greg Ginn and company will play a special all-ages show with "stripped down Black Flag songs for the kids."  The band is currently on its Victimology trek, which is set to resume this Wednesday in Dallas, Texas.  The outing is Black Flag's first with new singer Mike Vallely.