rafter shafter

A variant of the 69 position involving a horizontal beam. Person A hangs upside down while person B stands on an item of appropriate height to facilitate a junk in face orientation for both parties. Although originally developed in a log cabin, this position may be applied creatively to a variety of locations including sailboats and monkey bars. Other names include the beam ream, the leaky ceiling, the km special, the log snog, and the boom bang (nautical).