The phrase "ts-cock" is a combination of two tags: "TS" and "cock." In the context of adult content, "TS" stands for "transsexual" or "transgender," referring to individuals who may have undergone hormone therapy and/or surgical procedures to transition from one gender to another. "Cock" is a slang term for male genitalia.
Therefore, the tag "ts-cock" can be interpreted as suggesting a porn video that features transgender individuals engaged in sexual acts involving male genitalia. This could include scenes with trans women performing oral sex or engaging in penetrative sex with a penis, or trans men receiving oral sex or penetrative sex from a penis. However, the specific content and context of each scene will vary depending on the video itself.