Sixty-nine means giving your partner oral sex while your partner is giving oral sex to you at the same time. And so you’re also both receiving oral sex from each other.
Oral sex is when people use their mouths to stimulate another person’s genitals. Oral sex on a person’s vulva is sometimes called “cunnilingus.” Oral sex on a person’s penis is sometimes called “fellatio.” Anyone can give or receive oral sex as long as they’re consenting and comfortable with it.
Oral sex can’t cause pregnancy. But you can get STDs from oral sex, whether you’re giving or receiving it. These infections include gonorrhea, syphilis, herpes, hepatitis B, and rarely, HIV and chlamydia. Oral sex is generally less risky for these infections than unprotected vaginal or anal sex, but there is still some risk.
For safer oral sex, always use a condom, dental dam, or cut-open condom to lower your chances of STDs.