Psychosexual

[Jessica]

noun:
a male or female who has an insane aesthetic sense and inordinate interest in bottling urine, pulling knives on people, and possibly wearing somebody elses face as a mask or making a human [skin suit], similar to that of [John Wayne Gacy] or the fictional Jame [Gumb], Buffalo Bill, in Silence of the Lambs. But, like, dead sexy in addition to being dangerous creepy and in need of medication.
adjective:

to exhibit characteristics of a psychosexual
exhibiting undeniable animal magnetism of a distinctly sexual nature despite being dangerous or maladjusted

Etymology: blend of psychotic sexual
Usage: informal

[Monty]

Of or involving the psychological aspects of the sexual impulse.