- The Mythology of Obesity tells us that sex with a fat partner is either fruitless or impossible. It's a prejudice that crosses all boundaries of race, class, education, and physique: you're as likely to encounter it in a gynecologist's office as in the pages of The National Lampoon.In the real world, sex is more likely to be impeded by anxiety than adiposity. Fear of rejection, fear of not meeting the partner's expectations, and fear of not being able to perform are among the most common emotional barriers to intercourse. Some dysfunctional people harbor feelings of guilt over their sexual needs, or lack the skill or desire to stimulate their partner. Even mild anxiety can impede or disable sexual performance. Ignorance and inexperience contribute their own problems. "Frequently, for instance" reveals Dr. Helen Singer Kaplan in Psychology Today, "neither spouse knows where the clitoris is or recognizes its potential for eliciting erotic pleasure. They have intercourse as soon as the husband has an erection, and he ejaculates without considering whether his partner is ready. Such couples genuinely wonder why the wife does not reach orgasm."