I first heard a rumor of that something like this that was done in the 1960’s by General Electric. The rumor goes that in it’s test market the housewives were having spontaneous orgasms while using it. So they pulled the plug.
From Pink Tentacle:
At the 1970 World Expo in Osaka, consumer electronics maker Sanyo demonstrated their vision for the future by showcasing a series of appliances they thought would populate the home of tomorrow. Included was the Ultrasonic Bath, a pod-like human washing machine that cleans, massages and dries the user in a fully automated 15-minute process.
Using a ladder, the bather climbs in through an opening on top of the machine, which stands about 2 meters (6 ft) tall. Once the desired water temperature is set and the main switch is activated, the pre-rinse cycle starts, spraying the user with jets of hot water for 5 minutes.
Next, the chamber fills up with hot water for a 3-minute massage bath. High-pressure jets create a powerful whirlpool, and scores of knobby, golf ball-sized “massage balls” suspended in the water pelt the body, delivering a vigorous massage intended to stimulate blood circulation. An ultrasonic wave generator creates a ticklish cloud of tiny air bubbles that lift dirt from the skin.
The bath is then followed by a 2-minute hot rinse cycle. Finally, a 5-minute dry cycle blasts the user with warm air, while a flood of infrared and ultraviolet light destroys any lingering germs.
Developed as a concept model, the Ultrasonic Bath never made it into our homes. Several years ago, however, Sanyo unveiled the $50,000 HIRB (”Human In Roll-lo Bathing”) system, a compact version designed for use in elderly homes.