The acronym "DMMD" is often used in the context of BDSM pornography, and it stands for "Dominance, Mastery, and Male submission." It refers to a specific category within the broader BDSM genre, where male submissives are dominated by their male or female dominant partners. The term "DMMD" emphasizes the power dynamics at play in such scenes, with an added focus on the submissive role of men, which is not as common in traditional BDSM content.