9-volter Share definition Flag When going down on someone for oralsex and noticing they'e in bad need of a wash. You jump back like you've just put a battery on your tongue! "It was stinking I was like, aaaaaaaaaaaaaargh 9-Volter!" 9-volter by ThomASS June 17, 2003 0 0 Get merch Get the 9-volter mug. Buy Now — $32.95 See more merch