Receptive cum play (partner ejaculating or rubbing his semen over participant's anus, or participant using partner's semen as lubricant) was reported by one in six HIV-negative and one quarter of HIV-positive men on the same occasion of protected anal intercourse with a casual partner (PAIC). We investigated the prevalence of 'cum play' and its context among 1153 HIV-negative and 147 HIV-positive Australian gay men in an online survey. The exchange of semen, often referred to as 'cum play,' has featured in gay literature and may be a unique aspect of many gay men's sexual behavior.
