Listen to the sound clip 137 Viper NEIN! from Viper Soundboard: 137 Viper NEIN! 137 Viper NEIN! This sound is from Viper Soundboard VIPER may refer to: VIPER. See also: Dodge Viper, Viperidae, Russell's viper, VIPeR, Gaboon viper, and The Viper Room. Go to the full soundboardwith more sound clips Search