Proscenium Players' “Murder on the Lust Boat,” the players' fourth annual interactive Murder Mystery Dinner, opens Friday at Gold Dust West.A spoof on “The Love Boat” television series, “the Lust Boat” is what you don't want on a cruise, said director, producer and emcee Carla Wilson.With Captain Ivah Dinghy (Geoff Moore) at the helm, it's a cruise bound for mayhem. The antics of social director Monique Lewdinsky (played by Johanna Hudson), who creates new lusty games such as Tickle-Me Twister and Mazola Wrestling, is the inspiration of the boat's nickname.In the ship's Cask and Cleavage Lounge, entertainers Winnie and Nyona …