doctor-2
Explanation
The Joke
The comic imagines what doctors would sound like to an ancient Roman. The dialogue is rendered as mostly "blah blah blah" with certain recognizable words scattered in: "torn asshole," "pain in the ass," "balls on fire," "balls and dick on fire." The caption confirms the premise: "This is what doctors would sound like to an ancient Roman."
The joke plays on the fact that many modern English medical and anatomical terms are derived from Latin, the language of ancient Rome. However, the words that an ancient Roman would actually recognize in a modern medical conversation would not be the sophisticated clinical terminology -- instead, they would pick out the vulgar, colloquial body-part words that happen to have Latin roots or cognates. So to a Roman ear, a doctor's clinical discussion would sound like incomprehensible babbling punctuated by surprisingly crude-sounding references to genitals and backsides.
The Humor
The humor comes from the inversion of expectations about Latin and medicine. We tend to think of Latin as the language of elevated, scholarly medical terminology -- words like "cardiovascular," "anterior," and "subcutaneous." But the comic flips this by suggesting that the Latin words a Roman would actually catch in an English medical conversation would be the embarrassingly crude anatomical ones. The doctors appear perfectly professional and clinical, but from the Roman's perspective, they sound like they are just spouting gibberish interspersed with obscenities about private parts. It is a clever linguistic joke that also pokes fun at how much of medical language is designed to make crude body talk sound respectable.