Oral sex

Oral sex is the term given to genital stimulation by the mouth. People may engage in oral sex as part of foreplay before intercourse, or during or following intercourse. It may also be performed for its own sake.

It can be performed simultaneously (e.g. one partner performs cunnilingus, while the other partner performs fellatio), or only one partner may perform upon the other; this creates a multitude of variations.

Fellatio is oral sex involving a man's genitals. Possible positions include:

• The man lies on his back while his partner kneels between his legs.
• The man lies on his back while his partner lies off to the side of his legs.
• The man sits in a chair and partner kneels in front of him between his legs.
• The man stands while his partner either kneels in front of him or sits (in a chair or on the edge of a bed, etc.) and bends forward.
• Gargling – The partner fills their mouth with water and gargles it, and the male inserts his testicles into the water that’s being gargled.
• While the active partner lies on their back, the man assumes the missionary position but adjusted forward so as to insert his penis in his partner's mouth.
• The man stands or crouches at the edge of the bed, facing the bed. The active partner lies on the bed with their head hanging over the edge of the bed backward. The man inserts his penis into his partner's mouth, usually to achieve deep throat penetration, whereby the entire penis penetrates the mouth opening.
• The man fellates his own penis; see autofellatio

Cunnilingus is oral sex involving a woman's genitals. Possible positions include:

• The woman lies on her back as in the missionary position. The active partner lies on their front between her legs.
• The active partner sits. The woman stands facing away and bends at the hips.
• The active partner sits. The woman stands or squats facing towards partner and may arch her back, to create further stimulation.
• The active partner lies on their back while the woman kneels with her legs at their sides and her genitals on their mouth. Humorously popularised in the Monty Python song "Sit On My Face" (1980).
• The woman services her own genitals. Although rarer, some women still find this possible; see autofellatio.
• The woman stands, possibly bracing herself against a wall. The active partner kneels in front of her.
• The woman sits on the bed with her legs open, the active partner kneels in front of her.
• The woman is upside-down (standing on hands, held by partner, or using support, such as bondage or furniture), with the active partner standing or kneeling (depending on elevation) in front or behind. Such a position may be difficult to achieve, or maintain for extended time periods, but the rush of blood to the brain can alter stimulation's effect.
• The woman stands on hands, resting each leg on either side of the active partner's head, with the active partner standing or kneeling facing them. Depending on which way up the woman is facing, different stimulation and levels of comfort may be available.

Simultaneous oral sex between two people is called 69. It is called the congress of the crow in the Kama Sutra. Each partner may be male or female. They can be lying side-by-side, lying one on top of the other, or standing with one partner holding the other upside down.

Positions for anilingus, also known as "butt licking," "rimming", "anal-oral sex", "rimjob", or "tossing the salad" are often variants on those for genital-oral sex. Rimming-specific positions include:

• The passive partner is on all fours. The active partner is behind them.
• The passive partner is on their back with their legs up.
• The Rusty trombone, in which a male is standing while the active partner is both performing anilingus from behind, generally from a kneeling position, while also masturbating the standing partner, thus somewhat resembling someone playing the trombone.