The full chipmunk twister:
How much wood could a woodchuck chuck if a woodchuck could chuck wood? A woodchuck would chuck as much wood as a woodchuck could if a woodchuck could chuck wood.
And the can variation (I spiced it up a bit).
How many cans can a cancanning canner can if a cancanning canner can can cans? A cancanning canner can can as many cans as a cancanning canner can if a cancanning canners can can cans?