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Ekiben is a 1999 Japanese mock documentary film centering on the adult video (AV) industry which was written and directed by Shungo Kaji. Ekiben refers to a box lunch sold at train stations in Japan and it is also a slang term referring to a sexual position where the man remains standing while supporting the woman who faces him with her legs wrapped around his waist. This position is the "specialty" of the adult video actor Chocoball Mukai who appears in the film.