Some of it goes like:
He thought he saw a banker's clerk
Descending from a bus,
He looked again and found it was
A hippopotamus!
"If this should stay to dine," he said,
"There won't be much for us!"
He thought he saw a rattlesnake
That questioned him in Greek,
He looked again and found it was
The Middle of Next Week!
"The thing that I regret," he said,
"Is that It cannot speak!"