What is Shel Silverstein's funniest poem?

He's the Twistable Turnable Squeezable Pullable

Stretchable Foldable Man.

He can crawl in your pocket or fit your locket

Or screw himself into a twenty-volt socket,

Or stretch himself up to the steeple or taller,

Or squeeze himself into a thimble or smaller,

Yes he can, course he can,

He's the Twistable Turnable Squeezable Pullable

Stretchable Shrinkable Man.

And he lives a passable life

With his Squeezable Lovable Kissable Hugable

Pullable Tugable Wife.

And they have two twistable kids

Who bend up the way that they did.

And they turn and they stretch

Just as much as they can

For this Bendable Foldable

Do-what-you're-toldable

Easily moldable

Buy-what you're-soldable

Washable Mendable

Highly Dependable

Buyable Saleable

Always available

Bounceable Shakeable

Almost unbreakable

Twistable Turnable Man.

Try sayin' that five times fast!