Yes, it is.
On Monday; when the sun is hot
I wonder to myself a lot:
“Now is it true, or is it not,
“That what is which and which is what?”
On Tuesday, when it hails and snows,
The feeling on me grows and grows
That hardly anybody knows
If those are these or these are those.
On Wednesday, when the sky is blue,
And I have nothing else to do,
I sometimes wonder if it’s true
That who is what and what is who.
On Thursday, when it starts to freeze
And hoar-frost twinkles on the trees,
How very readily one sees
That these are whose — but whose are these?
“Yes, it is, isn’t it?” said Kanga, not waiting to hear what happened on Friday.