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

Funny

Funny as a wooden leg.
—George Ade

Funny as a barrel of monkeys.
—Anonymous

Funny as a clown.
—Anonymous

Funny as a crutch.
—Anonymous

As funny as a funeral in a snow storm.
—Anonymous

Funny as to throw an egg into an electric fan.
—Anonymous

Funny as an open switch.
—Amy Leslie