But oral sex is perfectly natural and has been done for ages and ages, all around the world.
Again, it used to be much more taboo than it is now, and a few religions still don't approve of or endorse different forms of sex than intercourse, primarily because you cannot get pregnant from them, and those groups believe that sex should only be for the purposes of procreation in marriage, so for certain groups who believe that, and subscribe to the idea of sin, it may be considered sinful.
Analingus is a term used to describe oral-anal sex for anyone.
Fellatio is sometimes called: a blow job, giving/getting head, sucking off, gobbing the knob, giving/getting a hummer, sucking the root, and many more terms evenprobably don't know.
Cunnilingus is also colloquially called eating out, going down on, carpet munching, rug munching, muff diving, and again, other new slang you may know about better than I.
Many people engage in oral sex (and so do some animals), and plenty find it to be a favorite sexual activity.Oral sex poses a lower risk of all STIs than vaginal or anal intercourse, but it does still carry STI risks.To reduce those risks, you can use latex barriers like you would to reduce risks with intercourse.However, many of those traditions have formed different beliefs to adapt to our more modern culture, and plenty of people within those traditions do engage in oral sex and sex for motivations other than procreation.Ultimately you need to think about how your religious beliefs work into your sexuality on any level, regardless of the particular practice.For fellatio, you use a condom to reduce STI risks, and for cunnilingus or analingus, STI risks can be reduced by using a dental dam.And just like with other kinds of sex, barrier use is only one part of safer sex: everyone having regular STI testing is just as important, especially for people who have engaged in any kind of genital sex with people before you and who has not always or consistently used barriers, including with oral sex.Should that be true for you or your partners, flavored condoms or dams are another option to reduce your STI risks.And for yourself or partners who find or are concerned that oral sex won't feel as good with a barrier, remember that putting a few drops of lube on the genitals of the person receiving oral sex before putting the barrier on makes a big difference.Oral sex is a term we usually use to describe any sexual genital (to the vulva, penis or anus) stimulation (touch) via someone's mouth, lips, throat and/or tongue (and often combined with use of the hands, too).Cunnilingus is the big word for oral sex when a vulva is involved, and fellatio, for oral sex with a penis.