Anilingus (from the Latin anus + -lingus, from lingere, "to lick", and alternatively spelled analingus) is an oral and anal sex act where one person stimulates the anus of another person by the use of their mouth, including lips, tongue or teeth. It is also referred to as anal–oral contact and anal–oral sex, or colloquially as rimming, and may be performed by or on people of any sexual orientation for personal pleasure or as a form of erotic humiliation.
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Article on health risks of anilingus
List of sex positions
P1-S5.06 Oral sex and risk of sexually transmitted infections
VALIDITY OF SEXUAL HISTORIES IN A PROSPECTIVE STUDY OF MALE SEXUAL CONTACTS OF MEN WITH AIDS OR AN AIDS-RELATED CONDITION
Psychophysiologic assessment of women with posttraumatic stress disorder resulting from childhood sexual abuse.
Intestinal parasitic infections in homosexual men: prevalence, symptoms and factors in transmission
High rates of enteric protozoal infections in selected homosexual men attending a venereal disease clinic
