Final answer:
The subject of the question is English, and the lines in question are from the musical "THE FROGS" by Stephen Sondheim. The metaphor of a frog croaking its name conveys the idea of public exposure.
Step-by-step explanation:
The subject of the question is English. The lines: "How public like a frog/ to tell your name the livelong day?" are from the musical "THE FROGS" by Stephen Sondheim. The speaker is using a metaphor to convey the idea of public exposure, comparing it to a frog constantly croaking its name. This suggests that being overly vocal about one's personal life can be seen as attention-seeking or excessive.