This article is classified "Partly real, partly fictional"
Personal Stereos are used as sex aids on some worlds [1], but banned on
others as socially unacceptable, because they damage hearing,
conversational skills and look silly.
Major features of Personal Stereos include a shiny black metal finish
for technofetishists, rubber and metal cable for bondage freaks, and for
body piercing fans earphones which are held in place by earrings - or
alternatively earphones which are actually embedded in the earlobe. It
is unadvisable to lubricate your personal stereo with anything other
than isotonic alcohol (the rubber parts only) or "Three-In-One Handy Oil"
(the metal parts only). Vaseline is prohibited.
[1] Their key sexual characteristics include:
1. A small motor which vibrates the bodywork,
2. Two earphones - one for each partner,
3. Music containing sexually explicit lyrics in order to help
young people learn what to do.