Futalina is a term used to describe a hermaphrodite person named Dalina. Though the name derives from the term "futa" (hentai terminology to describe one with a dick, vagigi and comforters on their chest). So put 2 and 2 together futa and Dalina you get Futalina.
Jo: look! Futalina
Mike: SHIII I wish she would just ruin me with her 10-inch