There is a lot of stigma around oral sex. I define oral sex as the act of orally stimulating your partners' genitals with your mouth, tongue, and lips - which could include sucking or licking of the penis (fellatio), vulva (cunnilingus), or anus (analingus). This sexual act has been traced all the way back to ancient Egypt - through the myth of Osiris and Isis, when Osiris died and Isis put him back together, she was known to blow life back into him by sucking on his penis - which brings us to a more expansive redefining of oral sex. But that’s a very dry and vague way to define a sexual act that can be exciting, pleasurable, and intimate. Oral sex is medically defined as oral stimulation of the genitals.