Sexual Deviancy is homosexual behavior ans any sexual excitement to the point of erection and/or orgasm, when the object of that excitement is considered abnormal in the context of the practitioner's learned societal norms.  To learn more see http://boomerspeaks.com/385204/408804.html .

Also see THIS WEEK IN SEXUAL DEVIANCY.

Sexual Deviance: Issues and Controversies addresses the biological, developmental, cultural, and learning factors in the genesis of sexual deviancy and links those theories to interventions with sex offenders. Edited by renowned sexual behavior experts Tony Ward, D. Richard Laws, and Stephen M. Hudson, this exceptional volume is divided into two sections. The first section covers explanations for sexual deviance, including ethical issues and classification systems for sexually deviant disorders. The second section addresses responses to sexual deviance, including traditional and modern intervention approaches.
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Sexual deviancy defined
Paraphilia Psychiatry, Sexual excitement to the point of erection and/or orgasm, when the object of that excitement is considered abnormal in the context of the practitioner's learned societal norms Types Exhibitionism, fetishism, frotteurism, pedophilia, sexual masochism, sexual sadism, transvestic fetishism, voyeurism, paraphilia, not otherwise specified.
SOURCE: McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

Sexual deviant definition.
a sexual disorder characterized by recurrent intense sexual urges, sexually arousing fantasies, or behavior involving use of a nonhuman object, the suffering or humiliation of oneself or one's partner, or children or other nonconsenting partners. Paraphilias include transvestic fetishism, other types of fetishism, frotteurism, pedophilia, exhibitionism, voyeurism, sexual masochism, and sexual sadism.