A turn-on is a real-world erotic trigger (such as a partner’s nudity or an opportunity for intercourse) that causes male arousal. Women are not aroused by such triggers. Responsive women use erotic fantasy to achieve the kind of arousal that leads to orgasm when alone. This mechanism allows a woman to adopt a male view on the imagined sexual scenario. An erotic turn-on is effective regardless of the intention of the person providing it (unlike a sexual come-on which is a sexual invitation).