Jerry Muskrat in "The Laughing Brook Stops Laughing"

"It's just as true as that I'm sitting here," replied Jerry sadly.
"Listen, Jerry Muskrat, and tell me truly; is the Laughing Brook laughing?" cried Grandfather Frog sharply.
"No," replied Jerry, "the Laughing Brook has stopped laughing, and the Smiling Pool has stopped smiling, and I think the world is upside down."