A fucking machine is a mechanical device used to stimulate a person erotically in a similar manner to penile penetration. It is a more sophisticated version of the much simpler vibrator. The device can be used by either sex to excite the anus or vagina.

A typical machine works by the transfer of rotational force from a motor to a directional motion on a shaft, which is tipped by a dildo.

These devices may be associated with, but are not limited to, BDSM play.

Another design consists of a dildo attached to the end of a rotating device such as an electric drill, which rotates to produce stimulation.

A Sybian is a type of fucking machine that consists of a saddle-like seat with a phallic rod in the center.

The vibrator was created to treat hysteria in Victorian women through medical orgasm induced by clitoral massage

Erotic provocation was delivered mechanically during the 19th century by such devices as air- or petroleum-powered vibrating tables, liquid jets, jolting chairs, swinging seats, and more. Electro-mechanical vibrators followed once electrical energy was harnessed.

Most of these were much larger and more powerful than today's standard devices, restricting ownership to the rich or to specialist medical centres. They resembled in size (though not in operation) what are now termed fucking machines.

With mass production, vibrators grew smaller and cheaper, sharply curtailing the market for earlier models.

Modern fucking machines differ from vibrators because they fuck as well as throb. Mass attention is drawn to them on the Internet, while appetite for these powerful appliances has induced the establishment and growth of manufacturers to satisfy rising demand.