loop
n.— «“The film was banned in over 23 states and yes it was controversial…there were the ‘white coat’ films before this and they always had this pretense,” by which Reems means the so-called white-coat with a doctor narrating various sex act films and the stag films (also known as “the loops,” in which Reems had also starred) before Deep Throat was released.» —“Inside Deep Throat—An Interview with Harry Reems” by Sadi Ranson-Polizzotti Blogcritics.org Sept. 16, 2005. (source: Double-Tongued Dictionary)