Doonesbury by Garry Trudeau for September 01, 1976
Transcript:
Duke: No, I tell you! No vicious little needles! My God, you people call this country a civilization?! Look, I probably don't even have appendicitis! That little quack in the restaurant only took my pulse! Doctor: As it turns out, sir, he was right. Duke: You... you mean, you've got already got me open!? Doctor: Yes, sir... you smoke a lot, don't you? Duke: Hey! You leave my lungs alone!!
It could mean that Duke smokes a lot even by the Doctor’s standards.