Adult content often explores a wide range of themes, including power exchange, role-play, and various fetishes. When it comes to "submission" and "gagging," these are typically explored within the context of BDSM (bondage, discipline, dominance/submission, sadism/masochism) and related fetishes. The emphasis on consent and safety is paramount in the production of such content, with producers adhering to guidelines that ensure the well-being of performers.