As sexual beings, it’s hard for us at Playboy to imagine too many instances in which we’d turn down sex with our partners. But a new survey of 2,000 people has revealed that yes, there are indeed several dealbreakers that can halt a toothsome roll in the hay. Judging by the results, these “dealbreakers” are, at face value, seemingly docile. For example, the biggest dealbreaker of all, according to almost 40 percent of the sample, is pre-shower oral sex.