What is the point of Asimov's short story "Rain Rain Go Away"? (Spoilers)

I love that story, for the record. Every time I watch something on TV or read something where someone goes a painfully long way for a joke, I always think, “They’ve got nothing on Asimov.” :smiley:

“Dismember me to Harold’s choir”…

Damn, I still remember the whole punchline.