The cinematic account of this fiction – released this past weekend – illustrates some of the problematic demarcations in the law of assault in the real world. The layers of coercion, consent, pleasure and pain are as complex as the acronym itself and defined by the participants themselves. The Dominant character Grey in the fantasy fiction Fifty Shades of Grey is bent on alluring his coprotagonist, Anastasia (Ana) Steele, to become his Submissive in a BDSM – Bondage & Discipline (BD) Domination & Submission (DS) Sadism & Masochism (SM) – relationship. Christian Grey knows exactly his hard limits in sadomasochism and he may also know a thing or two about his legal limits.