Yahoo, Mountain Dew!

Mountain Dew’s name is a previously-existing euphemism for moonshine, which likely traces back to Ireland, and has generally been marketed to highlight its potency. It was originally marketed as “zero proof moonshine” and had pictures of hillbillies on the bottle until 1973.

Hillbilly can be a pejorative term referring to people who dwell in remote, rural, mountainous areas usually of the United States. Because of its strongly stereotypical connotations, the term is frequently considered derogatory and is highly offensive to those of Appalachian heritage.