Alternative sex: any sexual practice adopted by alt sex people whose sexual preferences do not exactly fit into the classic and orthodox heterosexual monogamist relationship. There is a wide range of diverse and eccentric sexual ways of expression, as to be seen. It's definitely not perversion, but simply alternative sex.

BDSM comes from:
BD: Bondage & Discipline
DS: Dominance & Submission
SM: Sadism & Masochism

BDSM is an alternative sex term used to refer to the practice of sadomasochism, which is to extract sexual pleasure by inflicting pain to someone else or feeling pain before, during the act of this kind of alternative sex, or after. It has nothing to with nonconsensual alternative sexual intercourse. Neither it refers to sex abuse. In sadomasochism, a classic type of alt sex, both or more parties involved agree in indulging in suffering or inflicting pain. There is such intricate psychological game of consented transfer of power involved, as the terms dominance and submission allow to infer.

Homosexuality and Heterosexuality: unnecessary to define;

Polyamory: oppositely to monogamy, this alt sex category consists of simultaneity of sexual relationships, that is, more than one partner, which doesn't exclusively has to do with group sex. There is no cheating involved, but instead awareness of what goes on by the parties involved.

Transgender issues:

- Cross dressers: those who, every now and then, dress themselves up with attires of the opposite sex, no matter whose sexual orientation they belong to;
- Intersexed People: people with birth defects that render them not to identify completely to one or another gender;
- Hermaphrodites: the ones who have sexual characteristics both of male and female gender;
- Transsexuals: those who would rather have born as the opposite sex, measuring no efforts to "correct" such a terrible nature's mistake by hormone therapy or gender surgery;
- Transvestites: people who dress alike the opposite gender, not only occasionally but also frequently, on a daily basis