A sex toy used in a womans vagina or a mansasshole that vibrates. usually has speeds low, medium, or high.
christa: Jake i dont need you anymore!
jake: why?
christa: because i got this enormous vibrator i can DO whenever i want and i dont have to ask for it.
jake: whore!
The Plasma Pistol in the xBox game "Halo 2". Called such since charging the pistol causes the contoller to vibrate for as long as you hold the trigger.