This porn video tag is a combination of two words: "bareback" and "dick". Bareback refers to the act of engaging in unprotected sex, specifically without using condoms. In this context, it describes an explicit sexual encounter that does not involve any protection. The term "dick" is a slang term for the male genitalia or penis.
In summary, the tag "bareback-dick" denotes a porn video that features unprotected penetrative sex involving a bare penis. This would be a description typically used by adult audiences who are experienced with porn videos and understand explicit sexual content.