The external anatomy looked entirely ordinary. It was only after a dissection team at the University of Birmingham Medical School divided a donated pelvis down the midline that they found what was inside: two additional penile structures, stacked one behind the other, concealed within the skin of the scrotum.
The finding was published in the Journal of Medical Case Reports as only the second documented human case of triphallia. It drew enormous attention when it appeared, and the version that spread fastest contained a claim the paper never made. The more interesting argument, in any case, is not the count. It is what the authors say the discovery implies about everyone else.
