I wish that this room had a floor,
I don't care so much for a door,
But walking around
Without touching the ground,
Is getting to be such a bore.


As I was going down the stair,
I met a man who wasn't there,
He wasn't there again today;
I wish, I wish, he'd go away.


Fell in the fire, and burned to ashes.
Now, although the room grows chilly,
I haven't the heart to poke poor Billy.


I never saw a purple cow,
And hope I never see one.
But I can tell you anyhow,
I'd rather see than be one.

Several examples dredged up from my subconscious. Heaven knows where they came from!