1 definition by Rochelle Affleck
(noun) Mountain Dew served from a restaurant fountain. Much fizzier, less caffeinated, and more watery than its bottled counterpart.
A: What do you wanna drink? They have Mountain Dew.
B: Nah. That's Fountain Dew. Apples and oranges, dude.
B: Nah. That's Fountain Dew. Apples and oranges, dude.
by Rochelle Affleck September 12, 2005