Oral sex , sometimes referred to as oral intercourse , is sexual activity involving the stimulation of the genitalia of a person by another person using the mouth including the lips, tongue, or teeth or throat. Cunnilingus is oral sex performed on female genitals, while fellatio is oral sex performed on a penis. Oral sex may be performed as foreplay to incite sexual arousal before other sexual activities such as vaginal or anal intercourse ,   or as an erotic and physically intimate act in its own right. However, the transmission risk for oral sex, especially HIV transmission, is significantly lower than for vaginal or anal sex.
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Oral sex - Wikipedia
How long should oral sex last - men reveal surprising bedroom opinions
Photo by Jason Pratt via. Ten years ago, a bunch of researchers exploring condom use in the UK stumbled across something more interesting. Their study uncovered that British teens agreed that women expected oral sex much less than men — 20 percent of women, versus 43 percent of men. Earlier this year, researchers Ruth Lewis and Cicely Marston found that things were more complex — and contradictory — when they interviewed to year-olds for a study of their own, to find out their attitudes.
Students facilitating sex and relationship lessons with young people. Oral sex is sexual activity involving the stimulation of the genitalia of a person by another person using the mouth, lips, tongue, teeth, or throat. Oral sex can also be performed on the anus. Some people use oral sex as foreplay to other forms of sex; others use it as an act by itself.