The process in which a self volunteered female willingly allows a male(or female) partner to let a shot of any alcoholic liquor(preferably vodka) to be poured on the females shoulder, flowing down to her breasts, as the male willingly lick her dry all the way up.
Lynn: OMFG!!! Arnold, can you believe Aubrey and Aiden did a Chilean Waterfall?!?
Arnold: yeah! LMAFO this is great Arnie Productions Material!!!!!