Psionic tympani, craniomantic amulets, adding the Eighth Corner, qabalistic imprinting of the Mark of Cain, memory engrailment, worship of the Nazca sky-gods who built Sachsahuayman — the question isn’t why drill a hole in your head, but why haven’t you done it yet? (A variant on corrective phrenology).

Question. If you could have one type of body-modification done, what would it be, and why? anything from ritual scarring to prehensile tails…