By Denny Dyroff, Entertainment Editor, The Times CKY CKY, which is headlining a show at Underground Arts (1200 Callowhill Street, Philadelphia, http://undergroundarts.org) on August 31, is a band with its roots in West Chester. “Me and Deron (Miller) went to West Chester East, ” said CKY drummer Jess Margera, during a phone interview last week from a tour stop in Dallas, Texas. “That’s...