Oh yeahhhh. Dr Hilda Hutcherson, an expert in women’s sexual health and an assistant professor of obstetrics and gynecology at Columbia University Medical Center in New York, told YourTango that some women even find anal sex the easiest way to have an orgasm. “Every woman has the ability to orgasm, physiologically, because the space between her vagina and rectum is so thin that, in the doggie position, the penis is going to press up against her G-spot.”
Similarly with oral sex, if the person performing the act has any cuts or sores in his or her mouth it makes it easier to transmit or contract an STD since the protective barrier is broken. However, even without cuts or sores, it is still possible to pick up or transmit an STD. Certain infections can specifically affect the mouth, lips, or throat when it is contracted through oral sex, like herpes (HSV-1), chlamydia, and gonorrhea.
"But if the angle is wrong in anal sex, with too much of a sharp upward or downward angle, a sting-y and unpleasant pain can be the result. Having the right angle of entry is important for me. Also, pegging someone with a strap-on can be very pleasurable with an insert-able double-ended dildo, or even just the harness or base of the strap-on grinding up against the clitoris." —Margaret C.
The anal sphincter acts as a bit of a gatekeeper for the rectum. For anal sex, however, it’s important that this muscle relaxes. Not only does it make the experience more pleasurable, it reduces the risk of tearing or discomfort. Relaxation involves patience, both at the time you’re attempting penetration, and as you become more accustomed to anal sex.