Opening up my wallet and showing you a half dozen glossy 3x4 photographs of trans women that I originally found attractive but am no longer interested in. Then pulling a folded piece of graph paper out of the billfold, laying it out, and using a compass ruler to extrapolate the mix of hornyness chemicals in my blood at any given moment, in order to prove beyond a reasonable doubt that I am not interested in fucking anyone with a Y chromosome. Finally, dropping my pants and exposing my penis, in order to demonstrate physically the states of erection a description of a person will put me in based on how many traits expressed have been coded male or female.