Despite growing understanding of the ways in which sexual disgust operates, significant gaps remain, particularly around the prevalence of participation in sexual behaviours perceived to be disgusting, how this differs by type of behaviour and involvement of fluids (e.g., blood, semen) and barriers (e.g., condoms), as well as factors surrounding participation in these behaviours. Furthermore, no research has examined the direct relationship between disgust and arousal ratings of the same behaviour, how this differs by gender, and how this relationship relates to past participation in and desire to avoid a certain behaviour. The proposed project aims to address these gaps, which will advance knowledge about the prevalence of suboptimal sexual experiences and potential failures of the sexual inhibition and excitation system. The primary research questions are: (1.1 & 1.2) To what extent does past participation converge or diverge from behaviours that individuals indicate they would want to avoid? Does the rate of overlap differ for certain behaviours as compared to others? (2.1 & 2.2) How do the disgust and arousal ratings of a behaviour relate to one another? Does this differ for men and women? (3) How do the disgust and arousal ratings of a behaviour predict past participation or a desire to avoid? And (4.1 & 4.2) What contexts and motivations surround sexual experiences that are perceived to be disgusting? Do people have different experiences for different sexual behaviours?