The Pajama Game is a rather deceiving title of a musical. Upon hearing it, the image of a bunch of slumber-partying youngsters prancing around in pjs and telling ghost stories probably comes to mind. But no -- this Tony Award-winning comedy is all about love and sex. Well, in that 1950s, we-still-sleep-in-separate-beds sort of way. You see, things heat up at the Sleep-Tite Pajama Factory (who couldve guessed?) when the boss and the head of the union grievance committee become involved romantically. Find out if the pajama factory has any kind of interoffice dating policy at 8:15 p.m. Monday through Sunday (July 23 to 29) at the Muny in Forest Park (314-361-1900 or www.muny.org). Ticket prices range from $9 to $62.