http://www.theregister.co.uk/2005/05/18/vibrating_knickers/
You can buy your own pair here
Unfortunately, she became "so aroused by the 2½-inch vibrating bullet inside that she fainted" then "fell against shelves and banged her head". This prompted the attendance of the paramedics who "found the black leatherette panties still buzzing".
You can buy your own pair here