Explanation: It's a common meme to point out that men oft think about the Roman Empire. Here, the artist ArchonOfFlesh shows an... interesting reason why some boys of a certain submissive and/or masochistic bent might be thinking about the Roman Empire.
Mandatory historical note: once crucified, the odds of survival were very low. The Jewish-Roman writer Josephus once had three of his acquaintances rescued shortly after crucifixion, and even with professional medical help, two of them died after lingering in agony for a few days. Getting nails shoved through your bits is traumatic.