When this scene opens, 44-year-old British housewife Wendy is laid out on an exercise mat, getting her tits sucked by some guy who looks like he should be giving her lessons in some ancient form of exercise, not trying to get her off. "To me, sex and exercise are the same thing,�? she explained. "Exercise makes me horny, and fucking is good exercise.�? Makes sense to us. The question is, Wendy, whether jacking off is good exericise. "That depends on how hard you jack,�? she said.