"For the Snark was a Boojum, you see."

The greatest author of nonsense verse was a clergyman. From The Hunting of the Snark:

"Just the place for a Snark!" the Bellman cried

.... "I skip forty years," said the Baker, in tears,
"And proceed without further remark
To the day when you took me aboard of your ship
To help you in hunting the Snark.

"A dear uncle of mine (after whom I was named)
Remarked, when I bade him farewell—"
"Oh, skip your dear uncle!" the Bellman exclaimed,
As he angrily tingled his bell.

"He remarked to me then," said that mildest of men,
"'If your Snark be a Snark, that is right:
Fetch it home by all means—you may serve it with greens,
And it's handy for striking a light.

"'You may seek it with thimbles—and seek it with care;
You may hunt it with forks and hope;
You may threaten its life with a railway-share;
You may charm it with smiles and soap—'"

("That's exactly the method," the Bellman bold
In a hasty parenthesis cried,
"That's exactly the way I have always been told
That the capture of Snarks should be tried!")

"'But oh, beamish nephew, beware of the day,
If your Snark be a Boojum! For then
You will softly and suddenly vanish away,
And never be met with again!' ....

"It's a Snark!" was the sound that first came to their ears,
And seemed almost too good to be true.
Then followed a torrent of laughter and cheers:
Then the ominous words "It's a Boo—"

Then, silence. Some fancied they heard in the air
A weary and wandering sigh
That sounded like "-jum!" but the others declare
It was only a breeze that went by.

They hunted till darkness came on, but they found
Not a button, or feather, or mark,
By which they could tell that they stood on the ground
Where the Baker had met with the Snark.

In the midst of the word he was trying to say,
In the midst of his laughter and glee,
He had softly and suddenly vanished away—
For the Snark was a Boojum, you see.

The Hunting of the Snark by Lewis Carroll : The Poetry Foundation