 Even though explaining perversion in terms of biology seems obvious, “perversion” is opposed not only to “natural”, but also to “normal”, and the natural and the normal do not fully overlap. Moreover, the concept of “perversion” could refer to many things: the immoral, disgusting, bizarre, and biologically abnormal, among others. Using only one of these to define “perversion” will probably fail. It might also be that the methodology of discussing this concept is flawed, failing to account for the concept’s social function (Miller 2010). Thus, some philosophers have proposed to get rid of the concept altogether (Priest 1997; Primoratz 1999: ch. 6; Ruse 1988: 197–201). Recently, however, a new account of it in terms of its inhibiting “shared joy, mutual exploration, self-affirmation, and union” was offered (Kupfer 2016: 351). But this view seems to set the bar too high for what counts as non-perverted.