"This is not queer theory. This is my flesh and blood," writes Oliver Radclyffe in this spirited polemic on trans identity. Presenting his careful logic with lyrical prose, Radclyffe disrupts -- intentionally, pointedly, playfully -- the current structure of popular debates on gender. With Adult Human Male, he rejects the academic argot of theoretical constructs and, instead, recenters the trans body as fundamental to a humanist inquiry into identity. Radclyffe posits that the cis perspective -- from which nearly all gender discussions begin -- is anything but neutral and thus demands both interrogation and expansion so that trans identity is not viewed through a hostile lens. Adult Human Male marks an important advance in how to understand, discuss, and respect the trans experience.