Some Doggerel from my Dad for a Dreary, Damp Day:
Here is an old one. I have seen it in several places with no attribution like most of these things from ‘olden’ times.. Try to say it fast.
A skunk sat on a stump.
The stump thought the skunk stunk.
The skunk thought the stump stunk .
What stunk the skunk or the stump?
Here is another better known:
Peter Piper picked a peck of pickled peppers
A pack of pickled peppers Peter Piper picked
If Peter Piper picked a peck of pickled peppers,
Where’s the peck of pickled peppers Peter Piper picked?
(Oh, what the heck. Here're a couple of my favorites in French:
Trois gros ras dureront rarement.
As-tu oté ton thé?)