Erotic fantasy

Erotic fantasy is a subgenre of fantasy fiction and utilizes erotica in a fantasy setting. These stories can essentially cover any of the other subgenres of fantasy, such as high fantasy, contemporary fantasy, or even historical fantasy.
Erotic fantasy is often very similar to romantic fantasy, but is far more graphic and goes into much more detail when describing sex scenes.
Erotic fantasy can also be found in Fan Fiction. Erotic fan fiction focuses on using existing fantasy characters such as Galadrill or Éowyn from the Lord of the Rings novels and movies. Many recent works of erotic fan fiction use characters from the settings made popular by Dungeons & Dragons such as Dragonlance, and to a lesser extent Forgotten Realms. The nature of these erotic fantasy fiction varies widely, and include Slash fiction, and Elf porn. More...

Masturbation techniques

Ways of masturbating common to members of both sexes include pressing or rubbing the genital area, either with the fingers or against an object such as a pillow; inserting fingers or an object into the anus(see ana masturbation); and stimulating the penis or vulva/clitoris with electric vibrators, which may also be inserted into the vagina or anus. Members of both sexes may also enjoy touching, rubbing, or pinching the nipples or other erogenous zones while masturbating. Both sexes sometimes use lubricating substances to intensify sensation.
Reading or viewing pornography, or sexual fantasy, are often common adjuncts to masturbation. Masturbation activities are often ritualised. Various fetishes and paraphilias can also play a part in the masturbation ritual. Some potentially harmful or fatal activities include autoerotic asphyxiation and self-bondage.
Some people get sexual pleasure by inserting objects into the urethra. (The urethra is the tube through which urine and, in men, semen, flows.) If these objects are urethral sounds, the practice is known as "sounding." Other objects such as ball point pens and thermometers may be used. This practice can cause injury and infection.
Some people masturbate by using machines that simulate intercourse.
Some people may masturbate until they are close to orgasm, stop for a while to reduce excitement, and then resume masturbating. They may repeat this cycle multiple times. This "stop and go" method is practiced in order to achieve even stronger orgasms.

Origins

Female
Masturbation in females is a tool to regulate the conditions in the vagina, cervix and uterus, which is used to either increase or decrease the chances of conception from intercourse, depending on the timing of the masturbation. This timing is a subconscious decision. If she has intercourse with more than one male, it favors the chances of one or the other male's sperm reaching her egg.
During orgasm, the woman's cervix extends and retracts at each contraction (cervical tenting), and the opening to the cervix gapes open. If a seminal pool is still present in the vagina when she masturbates, a significant number of sperm will be sucked up into her cervix.

Male
The function of masturbation is to flush out old sperm with low motility from the male's genital tract. The next ejaculate contains more fresh sperm, which has higher chances of achieving conception during intercourse. If more than one male is having intercourse with a female, the sperm with the highest motility will compete more effectively.

Masturbation

Masturbation refers to sexual stimulation, especially of one's own genitals and often to the point of orgasm, which is performed manually, by other types of bodily contact (except for sexual intercourse), by use of objects or tools, or by some combination of these methods. Masturbation is the most common form of autoeroticism, and the two words are often used as synonyms, although masturbation with a partner (mutual masturbation) is also common. Animal masturbation has been observed in many species, both in the wild and in captivity.