The term "kung" in the context of a porn video tag seems to be misspelled or an unclear reference. However, it might be referring to "kink," which means an unusual or perverse sexual preference or practice. Kinky pornographic content typically includes BDSM, roleplaying, or any other non-traditional sexual activities that are considered out of the ordinary. If you meant "kung" as in "kung fu," it could refer to a scene involving martial arts or physical combat during the sex acts. Please clarify the term for a more precise description.