This paper explores practical application of Heidegger’s fundamental ontology to lived human experience and practical concerns beyond those he addressed, specifically the phenomenon of gender. We are so committed to gender norms that we ostracize or even kill those who violate them, yet rarely question the reasonableness of our expectations. Gender needs to be examined from a phenomenological stance, a) because of the ubiquity of gendering, b) because presuppositions regarding gender go largely unquestioned in most Daseins’ everyday existence, and c) (...) because cases in which actual fact contravenes our expectations offer insight into what it means to be human. (shrink)