Overview

Fellatio is a form of oral sex involving oral stimulation of the penis. Commonly known in informal speech as a "blow job," the practice ranges from brief stimulation to prolonged activity and may be performed as part of foreplay or as a primary sexual act. It can end when the receiver experiences ejaculation or at any mutually agreed-upon point.

Characteristics and variations

Technique and preferences vary widely among people. Some partners use only the mouth and lips, while others combine oral contact with hands or other forms of touch. Variants include different rhythms, depth, and pressure; some individuals practice deeper oral insertion while others avoid it. Communication and consent influence what variations are acceptable between partners.

Health, risks and safer-sex practices

Fellatio carries certain health risks because several sexually transmitted infections (STIs) can be transmitted by oral-genital contact, including herpes, human papillomavirus (HPV), gonorrhea and syphilis. The risk of HIV transmission through fellatio is lower than for some other sexual activities but is not zero. Safer-sex measures include using a latex or polyurethane condom and avoiding oral contact if there are cuts, sores or active infections. Reliable sources of guidance on prevention and testing can be consulted through health services and sexual health organizations.

Cultural attitudes toward fellatio differ widely across societies, religions and historical periods. In some contexts it is regarded as a private sexual practice; in others it has been subject to stigma, prohibition or legal regulation. Consent, mutual respect and the age of participants determine the ethical and legal permissibility of the act in most jurisdictions.

  • Fellatio is one form of oral sex; the complementary act performed on the vulva is cunnilingus.
  • Fellatio may be incorporated into broader sexual activity such as sexual intercourse, or practiced independently.
  • Terminology and slang vary; respectful language and explicit consent are important when discussing or engaging in sexual activity.

For personal health concerns, STI screening or guidance on safer practices, consult qualified healthcare providers or local sexual health clinics. Additional reliable material and educational resources are available through public health organizations and sexual education services.