A nonsense rhyme about a 'wondrous wise' man who scratches his eyes out on a bramble bush, then scratches them back in on a second one. The daftness is the whole point.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
There was a man in our town,
And he was wondrous wise,
He jumped into a bramble bush,
And scratched out both his eyes;
But when he saw his eyes were out,
With all his might and main,
He jumped into another bush,
And scratched 'em in again.
About this rhyme
Text matches: man jumps into a bramble bush and scratches out both his eyes, then jumps into another bush and scratches them back in.
A man scratches his own eyes out in one bush, then scratches them back in again in another, and the rhyme never blinks at how impossible that is. It's nonsense built on a straight face, wise and foolish in the same four lines. Cross your eyes at the first bush and open them wide again at the second.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition