My wife and I at the same time said it's Dr. Suess:
Socks
Box
Knox
[/color]Knox in box.
Fox in socks.
[/color]Knox on fox
in socks in box.
[/color]Socks on Knox
and Knox in box.
[/color]Fox in socks
on box on Knox.
[/color]Chicks with bricks come.
Chicks with blocks come.
Chicks with Bricks and
blocks and clocks come.
[/color]Look, sir. Look, sir.
Mr Knox, sir.
Let's do tricks with
bricks and blocks, sir.
Lets do tricks with
chicks and clocks, sir.
[/color]First, I'll make a
quick trick brick stack.
Then I'll make a
quick trick block stack.
[/color]You can make a
quick trick chick stack.
You can make a
trick clock stack.