(Doctor says dreams will often disclose the nature of an ailment.)

Rube Goldberg’s Mike and Ike arose 
One morning from their sleep. 
Although Ike seemed contented,
Poor Mike was prone to weep .
Said he, “Dear Ike, there’s trouble here.“ 
(And rubbed his swollen pate.)
“I tell you it is terrible,
The dreams I’ve had of late!
All night I dream of ocean waves, 
From which I shrink in fright. 
A million angry breakers, Ike, 
Were chasing me last night! 
Whene’er my sleep is broken with 
A shriek or piercing yell,
It’s just because I’m dreaming then 
Of falling down a well.
Last night I thought Niag’ra Falls 
Pursued me down the street— 
And I was making frightened cries 
Too awful to repeat;
I dreamed of streams and cataracts,
And then I dreamed of rain—”
**********************************
Said Ike, “I know what ails you, Mike— 
It’s WATER ON THE BRAIN !“

Source: Henry Harrison.  Infunitive and Other Moods, by Henry Harrison : With Twenty Poems, by Vaughn G. Hannington. New York, Melomime Publications, Inc. [c1923]

According to the prologue, Henry Harrison was 19 years old when this book was published. He refers to Hannington as “young Mr. Hannington”