Online Sex Dictionary – O
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O face – n.
The facial expression of someone when having an orgasm.
onanism – n.
oral contraceptive – n.
A pill taken by women that allows them to have sex without becoming pregnant; birth control pill.
oral sex – n.
A sex act where the mouth of one person is placed on the genitals of another. See also FELLATIO (oral sex performed on a man) and CUNNILINGUS (oral sex performed on a woman).
orgasm – n.
The pleasurable, climactic release of sexual tension. In a man, it is usually accompanied by EJACULATION.
orgy – n.
A sexual encounter with three or more people. Group sex.