The first and last lines of Lolita make my dorsal hairs quiver, as Nabokov intended.
Relatively misshapen and formless, the dorsal figure is perhaps even more expressive of physical torment.
1540s, from Middle French dorsal (14c.), from Late Latin dorsalis, corresponding to Latin dorsualis "of the back," from dorsum "back," of uncertain origin.
dorsal dor·sal (dôr'səl)
Of, toward, on, in, or near the back or upper surface of an organ, a part, or an organism.
Lying on the back; supine.