When Mr Cal's little boy wet the bed he got really scared and worried, so Mr Cal told him this and now it's his favourite :)
I made myself a snowball
As perfect as could be
And then I kept him as a pet
And let him sleep with me
I made him striped pyjammies
And a pillow for his head
Then last night he ran away
But first he wet the bed.
A flea and a fly in a flue
Were imprisoned, so what could they do?
Said the fly, "let us flee!"
"Let us fly!" said the flea.
So they flew through a flaw in the flue.
Ogden Nash