Help keep us reporting with a tax-deductible donation to the Cornell Sun Alumni Association, a non-profit dedicated to aiding The Sun. If he has to keep looking down to gather up your hair, you might just end up dying while giving head. Oral sex can also be performed by both partners at the same time in the so-called "sixty-nine" position. Location, Location, Location By this, I basically mean stick to the freeway. Small cars usually work well, SUVs not so much. Oral sex is not necessarily an effective method of preventing sexually transmitted infections STIs , although some forms of STIs are believed to be less commonly spread in this way, and oral sex has been recommended as a form of safe sex. Follow this author This summer, my girlfriend and I were driving back from a day spent relaxing on the beach when we started talking about the pinnacle of vehicular sex acts — road head. While any exposure to a partner's semen appears to decrease a woman's chances for the various immunological disorders that can occur during pregnancy, immunological tolerance could be most quickly established through the oral introduction and gastrointestinal absorption of semen. Okay, so my first experience with road head was not exactly perfect. Under this system, it was considered to be abhorrent for a male to perform fellatio, since that would mean that he was penetrated controlled , whereas receiving fellatio from a woman or another man of lower social status such as a slave or debtor was not humiliating. Cunnilingus and Fellatio Cultural views on oral sex range from aversion to high regard. While some headlines have interpreted this as evidence that oral sex among teenagers is "on the rise", this was the first comprehensive study of its kind to examine the matter. Like all aspects of sexuality, there exists a large number of variations on a theme, a few common ones being: The breakdown products are then absorbed as a negligible quantity of nutrients. Watch out for biting! A makeshift dental dam can be made out of a condom  or a latex or nitrile glove ,  but using a real dental dam is seen as preferable; this is because real dental dams cover a larger area, avoid accidents caused by "slipping" outside the covered area, and avoid the risk that makeshift versions may be accidentally damaged or poked with the scissors during the cutting procedure. That way, the driver can just focus on driving straight without having to focus on turns or stoplights.