A fork of Rural Dictionary
Verb. To consume a beverage from a bottle or carton by pouring it in your mouth without touching the opening with your lips. Usually done to prevent the spread of germs or undesired backwash.
Friend 1: Yo, I'm thirsty. Can I have some of your Mountain Dew? Friend 2: Yeah but you better fountain it. I don't need to be drinkin' your spit.