(n.) The unfortunate event that occurs after drinking mass quanitites of beer or liquor before bedtime. The bed will be sopping wet and lukewarm in the morning. See related: "Ohio Hot Pocket"
(v.) The act of unintentionally relieving oneself onto a romantic bedmate, due to heavy drinking.
1. Yo, last night Seth drank a gallon of Black Bear Ale, and we all knew that we would soon be waking up to the aftermath of a Smoky Mountain Fountain.
2. Oh my god, Shannon TOTALLY got Smoky Mountain Fountained by some guy she met at the brewery. As if!
When there is a hookah, or other smoking object, going around a room and someone is sitting in the circle and forgot to wear a belt. When another member of the group notices that they have half of the ass hanging out of their pants the member proceeds to blow the smoke down their friends pants. Therefore creating smokey mountains.
Look kyle, sadie over there isnt wearing a belt. I know steve we should go over there annd give her a smokey mountains.