1. The absence of a sexuality, most notably in humans. Some may just not be sexuallly attracted to others, otehrs may completely lack a sex drive or sexual desires. Common misconceptions are that such people have suffered sexual abuse, are emotionally frigid, are closet homosexuals, masturbate ten times a day, are too ugly to get in a sexual relationship or are impotent. This, more often than not, does not apply.
2. Without sexual intercourse. For example, cells (be it nerve cells, bacteria or other protozoa such as amoeba) reproduce via mitosis (or dividing) as opposed to sexual reproduction. The result tends to be two cells of exactly the same genetic structure as the 'parent cell', though genetic mutation can occur if the DNA is duplicated incorrectly.
Connected words/phrases: asexuality, sexuality, sexual, mitosis, cell division, queer (asexuality is considered a queer sexuality. This is not a negatiive connotation, only meaning 'different').
2. Apart from rare cases where cells reproduce via meiosis (splitting into four cells), most cells reproduce via mitosis. Originally the human body is just one zygote cell, two gamete cells fused together. At adulthood, there are millions or perhaps billions of cells all with different purposes, nerves, muscle, skin, brain tissue... This is all possible due to mitosis, the non-sexual reproduction of the cells themselves. However, the human body requires sexual reproduction for the initial cell. An example without this is bacteria, which have no form of intercourse and simply divide. This is asexual reproduction.
Repulsed Asexuals: Asexuals that are opposed to the idea of having sex with any other individual. Some may masturbate to release any sexual tension, though some even find masturbation repulsive.
Flexible Asexuals: Asexuals that are more open to the idea of having sex and may be willing to have sex for the benefit of a sexual partner. Some flexible asexuals may even enjoy having sex.
Aromantic Asexuals: Asexuals who have little or no romantic drive. They usually prefer to be single. Some even never experience crushes. Aromantic asexuals are usually repulsed asexuals.
Romantic Asexuals: Asexuals who have a romantic drive and often have a desire to find a significant other. Romantic asexuals can be either flexible or repulsed. Flexible ones are usually willing to date sexuals and asexuals, repulsed ones usually prefer to date other asexuals when possible. Romantic asexuals are split into a few subcategories.
Hetero-Romantic Asexuals: Asexuals who are EMOTIONALLY attracted to individuals of the opposite gender.
Homo-Romantic Asexuals: Asexuals who are EMOTIONALLY attracted to individuals of the same gender.
Bi-Romantic Asexuals: Asexuals who are EMOTIONALLY attracted to individuals of the same gender and the opposite gender.
Pan-Romantic Asexuals: Asexuals who are EMOTIONALLY attracted to individuals of all genders.
2) Please don't ask me to explain the difference between emotional and physical attraction. I am a repulsed aromantic asexual who has never experienced a crush so I wouldn't know.
3) Dumb Girl: OMGZ all my boyfriends have sucked I'm going to become asexual!
Asexual Girl: Since you are having bad luck with men, and you apparently have the power to magically change your sexual orientation, why not become a lesbian and give women a try?
Dumb Girl: *blank stare*
4) Asexuals do not experience sexual attraction. They are like the opposite of a bisexual, or a pansexual if you want to be technical. Is that really so difficult to understand?
Asexuality is _not_ a choice, and you cannot decide to become one. They are just born that way, the same way as people are straight, gay, bi, or whatever.
Me: no, you can't "become" asexual
2. I am asexual, I am not attracted to men or women.
Is a very rare and strange sexual orientation