Rudnick, also a screenwriter (““Addams Family Values’’), is a Silly Symphonist of carnal knowledge. A sadomasochistic couple turn out to be mild suburbanites whose basement contains ““a few shackles, a rack and a Maytag.’’ Informed that someone ““has a gold ring through her vulva,’’ the daughter’s amazed reply is ““through her car?’’ On a dollars-per-boffolas measure, Rudnick is a best buy, but ““Naked Truth’’ is also a smart farce that embraces the humanity of sex – gay, straight or pretzeled. Standouts in Christopher Ashley’s slap-happy production at New York’s WPA Theatre are Mary Beth Peil as the socialite and J. Smith Cameron as her daughter, two upper-crust uptights whose loosening up is comically liberating.
