This is not about your "oh" face. This is about your tubercle. Your tubercle is located on your upper lip — "the slight projection on the free edge of the center of the upper lip at the lower extent of the philtrum." In other words, the puffy little spot in the middle of your upper lip.
According to a paper published last week by the Journal of Sexual Medicine, the more that little spot puffs out, the more likely you are to have your bell rung by p-in-v sex.
According to the results of an online survey featuring 258 mainly Scottish women with a mean age of 27 years, having a prominent tubercle means a woman has a greater chance of ever having had a vaginal orgasm from penile-vaginal intercourse.
It's true that it was a small study, and it's true that not all scientists believe that there is any real difference between a "clitoral" orgasm and a "vaginal" orgasm. And! It's true that the women themselves, not scientists, judged their own tubercle characteristics. Still: Now is the time you go find a mirror and stare at your tubercle.
Shape Of A Woman's Pout May Mean Better Sex [The Body Odd]