A brassy redhead with a big mouth, a big cup size, and no problem brassing off about her sex life and the presumed sex lives of others, funny gal Kathy Griffin seems like a natural to have mooned the cameras at least once in her career as a stand-up comic, television personality, and film star. One listen to the ballsy broad talking boning as a guest on raunch king Howard Stern’s radio show, and it’s shamelessly obvious that she has the supercharged libido and craven carnal imagination that make for skintillating greatness. But so far potty-mouth Kathy’s exposure has been confined almost exclusively to the non-nude media of network TV (Suddenly Susan in particular), animated features, and movies with nonsuggestive titles such as Muppets from Space (1999).