Cunnilingus
Cunnilingus is an oral sex act performed by a person on the female genitalia. It may be performed by a sexual partner as foreplay to incite sexual arousal before other sexual activities or as a sex act on its own. Colloquially it is called eating pussy, though there are numerous slang terms. General statistics indicate that 70-80% of women require direct clitoral stimulation to achieve orgasm. For most women, orgasm is easily achieved by cunnilingus because of the direct clitoral stimulation (including stimulation to other external parts of the vulva that are physically related to the clitoris) that may be involved during the act.
Some sex manuals recommend beginning with a gentler, less focused stimulation of the labia and the whole genital area. The tip, blade, or underside of the tongue may be used, and so might the nose, chin, teeth and lips. Movements can be slow or fast, regular or erratic, firm or soft, according to the participants' preferences. The tongue can be inserted into the vagina, either stiffened or moving. The performing partner may also hum to produce vibration. Cunnilingus may be accompanied by fingering the vagina or anus, or by the use of a sex toy.
Facesitting is usually performed in order to allow access for cunnilingus and/or anilingus. Likewise the 69 position, when performed by heterosexual or lesbian partners.
Daisy-chaining is a form of group sex during which each participant is simultaneously performing and receiving oral sex. Some definitions of the term require all participants to be female, although most are more permissive and allow the definition to include both men and women.