Noun:\n\n-A person who is frequently(most likely every day) involved in the act of smoking large quantities of marijuana.\r\n'Stems from the english word "Viper"(term coined by Rosetta Howard's song "If you're a viper") pronounced in a boston accent.'\n> "Hit that shit like a Vipah!"\n> "*CoughCoughCough* VIPAHZ!\n