A milking cup comprising a body having a top portion and a bottom portion. The top portion has a first lip formed thereon and the bottom portion has a second lip formed thereon. The first lip and the second lip are separated by a distance. The milking cup further comprises a rotating shell positioned between and secured by the first lip and the second lip, wherein the rotating shell encircles the body and is operable to rotate around the body independently of the movement of the other portions of the body. The rotating shell has a length that corresponds to the distance between the first lip and the second lip.
