Much like an Upper Decker but instead of defacating in the upper part of a toilet you defacate in a water softener salt tank. Mostly used in the country where people have wells and need water softeners to remove hardness, iron, etc.
That party sucked. I was going to give them an Upper Decker but when I saw the water softener in the bathroom closet I decided to give them an Outfielder instead.
A baseball term. Involves the threepositions which play in the "out" portion of a baseball field, being the Left, Right, and Center fielders who cover the left, right, and center of the outer field.