My boss ("The chicks love it.") just handed me a few (???). I'd never heard of such a thing, but given the fact the woman on the package looks to be seriously enjoying herself... I'm anxious to give them a try. Please PM me if you're interested and in the Los Angeles area.
Although it appears to be an electrically powered device, the instructions assure me its "completely comfortable and safe" which is, of course, my first concern. And I'll be doing my bit to stop the spread of AIDS, as an added bonus.