shame on you

"Oho!' said the pot to the kettle;
"You are dirty and ugly and black!
Sure no one would think you were metal,
Except when you're given a crack."

"Not so! not so! kettle said to the pot;
" 'Tis your own dirty image you see;
For I am so clean -without blemish or blot-
That your blackness is mirrored in me"

-"Maxwell's Elementary Grammar" school book copyright 1904