Oral sex consists of all sexual activities that involve the use of the mouth, which may inclue use of the tongue, teeth, and throat, to stimulate genitalia. Cunnilingus refers to oral sex performed on a woman and fellatio refers to oral sex performed on a man. Analingus refers to oral stimulation of a person's anus. Oral stimulation of other parts of the body is usually not considered oral sex; see kiss and licking.