I propose an exploration of the trans feminine phallus, arguing that it constitutes an assemblage of heterogenous partial objects. I reconstruct established psychoanalytic theories of the phallus and entrenched cultural representations, which are broadly phobic and cis-centric, often collapsing into a cisteria. I show how these cast trans feminized people as abject (cis male perspective) or as dangerous and intrusive (cis female perspective). Building on McKenzie Wark’s searing indictment of searing indictment of established psychoanalysis, I ask whether a trans metapsychology is possible. As a first contribution to this new metapsychology, I propose to think of the trans feminine phallus as a series of disjunctive syntheses, which undermines and rearticulates gender morphology. I argue that this trans feminine phallus threatens the unity of cis heteronormative arrangements. It emerges, as one passes through cisteria, into the truths of the hysteric trans subject.