The characteristics common to all human orgasm experiences and potential gender and contextual factors affecting these experiences were investigated in two studies. A two-dimensional descriptive model of the orgasm experience was evaluated by testing hypotheses concerning (a) fit of the model to adjective-ratings data describing male and female orgasm experiences, and (b) sexual context effects on the importance of model components. In the first model-evaluation study, 888 university students (523 women) provided adjective ratings to convey orgasm experiences attained through both solitary masturbation and sex with a partner. In a cross-validation study, 798 university students (503 women) provided similar ratings to convey orgasm experiences attained either through solitary masturbation or through sex with a partner. Overall, findings supported the utility of a two-dimensional model of the orgasm experience, an adjective-rating approach in comparing male and female orgasm, and the importance of examining sexual context effects on the orgasm experience.