Explanation: Just a somewhat memetic interpretation of the bas-relief, depicting the Roman Emperor Valerian being captured by the Sassanid Persian King Shapur I. Valerian’s capture was the first time a Roman Emperor had been taken prisoner by any foe, and one of the worst defeats ever suffered by the Empire.

Valerian’s fate thereafter is contested - some say that he was mistreated and humiliated, or killed relatively soon after, others that he lived in relatively good (if unfree) conditions until his natural death.

Looks a bit like Valerian tried to touch the horse and Shapur was having none of it :D

It also made my brain start playing that weird look at my horse song.