Cooper, a clinical psychology doctoral student at Temple University. Depending on a woman’s motivation, pretending to orgasm can actually increase her sexual satisfaction, according to research by Erin B. What is surprising: Faking isn’t always bad for your sex life. With 28 percent of men occasionally faking it themselves, they shouldn’t be too surprised. “The men also reported they’d be distressed to find out their partners were faking,” says McKibbin. And like Harry, most men don’t believe it could happen to them, with only 20 percent saying they think their female partners might fake, according to another yet-to-be published study by William McKibbin, PhD, a psychology professor at the University of Michigan, Flint. Sixty-seven percent of heterosexual women admitted to occasionally faking orgasm in a study published last year in the Journal of Sex Research (Vol. “Well, they haven’t faked it with me,” Harry (Billy Crystal) retorts. “Most women at one time or another have faked it,” she says. Remember the Katz’s Deli scene in “When Harry Met Sally” when Sally (Meg Ryan) writhes and moans and pounds on the table to demonstrate her pitch-perfect imitation of la petite mort?