Oral sex

Why it matters

Oral sex is among the strongest behavioural predictors of orgasm in partnered encounters. Frederick et al. (2018) found that encounters including oral sex, manual stimulation and deep kissing were associated with substantially higher orgasm rates, particularly for women. It is not a preliminary to intercourse; for many people it is the main event.

On a vulva

Slow, consistent and predictable beats fast and varied. The most frequent complaint in survey work is stopping the pattern that was working — as arousal builds, the correct move is to keep doing exactly what you are doing.

• Start away from the clitoris: inner thighs, outer labia, the mons. Building anticipation is functional, not romantic decoration.
• Use a flat, broad, soft tongue for most contact. Pointed and rapid works for some and is too intense for many.
• The glans is often too sensitive for direct contact, especially early. Herbenick et al. (2018) found most women preferred indirect stimulation or contact through the hood. Work through the hood or to one side.
• Vary pressure and pattern before she is close, not after.
• Add fingers if wanted — combined internal and external stimulation is highly effective for many people.
• Keep going after orgasm only if asked; the glans is frequently hypersensitive for a period afterwards.
• Ask. "Faster or slower?" "More pressure or less?" "Here or here?" Asking during is more useful than guessing.

Jaw and neck fatigue is real. Change position, use a pillow under their hips, and use hands to share the work.

On a penis

• Wetness is the point. Saliva or a flavoured, sugar-free water-based lubricant.
• Cover the teeth; wrap the lips over them.
• Hands do most of the work in a well-executed act. A hand following the mouth means full-length stimulation without needing depth.
• The frenulum, on the underside below the glans, is the most sensitive area for most people. The glans rim is next.
• Depth is optional and mostly irrelevant to sensation. Deep throating is a preference, not a skill requirement, and carries gag and airway considerations.
• Attend to the scrotum and perineum if welcome — both are richly innervated.
• Agree in advance about ejaculating in the mouth. Do not assume, and do not decide mid-act.

Rimming

Oral–anal contact. Pleasurable for many; the anus is densely innervated. Health considerations are specific and important: it is a documented route for hepatitis A, shigella, giardia, E. coli, other intestinal parasites, herpes and HPV. Practical measures: shower first, use a dam, and get vaccinated against hepatitis A and B. Outbreaks of hepatitis A and shigella among men who have sex with men have been repeatedly traced to this route, and vaccination is the intervention with the clearest evidence.

STI risk

Lower than intercourse for HIV but far from zero for everything else.

• Gonorrhoea of the throat is common and almost always asymptomatic. It is a significant reservoir and is the hardest site to cure. Regular throat swabs are the only way to detect it.
• Syphilis transmits readily by oral sex; a primary chancre in the mouth or throat is easily missed.
• Herpes: HSV-1 from a cold sore transmits to genitals and is now the leading cause of new genital herpes in many high-income countries. Avoid oral sex when a cold sore is present or prodromal.
• HPV transmits orally and causes oropharyngeal cancers, which have risen sharply; HPV vaccination protects against the responsible types.
• Hepatitis A and B transmit; both are vaccine-preventable.

Reduce risk with condoms and dams, hepatitis A/B and HPV vaccination, three-site testing, and avoiding oral sex immediately after flossing or brushing, which creates gum microtrauma.

Comfort and consent

Gagging is involuntary and is not a target. Anyone can stop at any point. Pressing on the back of a head is a boundary violation unless it has been specifically negotiated. Taste and smell vary with diet, cycle phase, hydration and hygiene; a strong or unusual odour with itching or discharge is a reason to see a clinician, not a reason for shame.

Sources

• Frederick DA et al. Archives of Sexual Behavior, 2018.
• Herbenick D et al. "Women's experiences with genital touching, sexual pleasure, and orgasm." Journal of Sex & Marital Therapy, 2018.
• Chow EPF, Fairley CK. "The role of saliva in gonorrhoea and chlamydia transmission." Sexually Transmitted Infections, 2019.
• Chaturvedi AK et al. "Human papillomavirus and rising oropharyngeal cancer incidence in the United States." Journal of Clinical Oncology, 2011.
• UKHSA/ECDC. Hepatitis A and shigella outbreak guidance among men who have sex with men, current editions.
• BASHH. UK national guidelines on oral sex and STI risk, current edition.

Last reviewed: August 2026.