Shadow Wash Shel Silverstein

I've never washed my shadow out
In all the time I've had it.
It was absolutely filthy I supposed,
And so today I peeled it off
The wall where it was leaning
And stuck it in the washtub
With the clothes.
I put in soap and bleach and stuff,
I let it soak for hours,
I wrung it out and hung it out to dry,
And whoever would have thunk
That it would have gone and shrunk
For now it's so much
Littler than I.