A racial slur for Native Americans in the mid-west and west coast of Canada. typically used amongst Native Americans themselves. The slur refers to the alcoholic problems common amongst the Native American Population. "Alcoholic Chug" and "Drunken Chug" are also common slurs in place of the original.
As a noun : Had "how clean is your house" on last night, couldn't help but have a wee chug.
As a verb: Spent most of last night chugging in my wanking chariot last night. My bell-end is bruised.