Sybian

From WikiPorn

The Sybian is a device used mostly by women for autoerotic purposes and sexual stimulation (e.g., masturbation). It consists of a saddle-like seat containing an electric motor connected to a rod that protrudes from a hole in the center. Various phallic objects are specifically designed for the Sybian and can be attached to the rod. The Sybian is designed to vibrate when used, while its attachment weaves around in a circle. This vibration stimulates the clitoris externally, while the penetrative gyration (in a circular motion) stimulates the G-spot. The intensity of either of these actions can be increased or decreased through a control box attached to the Sybian's base with a cord. The combination of the different stimuli can presumably produce more intense orgasms than the user might otherwise be able to experience via more standard autoerotic or other sexual activities.