Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

John Byrom

Clean as a whistle.

Clear as a whistle.

Dirty as a hog.

Flat and bare as Hebrew verse of Bishop Hare.

Meager as death itself.

Round as any Jonian jug.

Just as a wheel, that’s running down a hill
Which has no bottom, must keep running still.