Oh say can you say?
(Book)

SAMPLE TEXT: You should leave your Grox home when you travel by air. If you take him along they charge double the fare. And your grox must be packed and locked up in a Grox box, which costs much, much more than a little old fox box. So it's heaps a lot cheaper to fly with your foxes than waste all that money on boxes for groxes. And, what do you think costs more?...A simple thimble or a single shingle? A simple thimble could cost less than a single shingle would, I guess. So I think that the single shingle should cost more than the simple thimble would.

A collection of nonsensical tongue twisters.