Bicdtina is a possible abbreviation for "BDSM," which stands for Bondage, Dominance, Submission, and Sadomasochism. It refers to a range of sexual practices or roleplaying involving one person taking control (the dominant) over another (the submissive). This can include various forms of physical restraint, psychological power play, role-playing, and the use of various tools such as whips, handcuffs, or other BDSM equipment. The term is used to describe these consensual activities within adult porn videos and related content.