Oral Sex: Sexual activity involving the stimulation of the genitalia by the use of the mouth

For oral sex on a man see fellatio.
For oral sex on a woman see cunnilingus.
For the explanation of different types of English language see Oral Sects.

For males it can include placing the penis in one's mouth and for females licking the vulva.

Sometimes oral sex is performed as a way of getting ready for intercourse, but it may be done as an alternative to intercourse.

If someone is performing oral sex on a male, he or she may decide to swallow the semen if the male ejaculates in the mouth. There is no risk of pregnancy from swallowing semen.

One can get sexually transmitted diseases from oral sex, such as herpes simplex (which can be passed between mouth and groin or the other way). Some STDs, like HIV, are much harder to pass through oral sex, but it is still possible.

The technical term for oral sex is fellatio if performed on a male and cunnilingus if performed on a female. Slang for oral sex is common in Western cultures, for example: "going down on" or "giving a blowjob" or "giving head."

• 69 (sex position)
• Fellatio