The pot calls the kettle black

Well, the pot is calling the kettle black...!

The U.S. pointing to China is a bit like the pot calling the kettle black. The deficit with China reflects poor policy on both sides of the Pacific.

Now that's a case of the pot calling the kettle metal.

How agree the kettle and the earthen pot together? for if the one be smitten against the other, it shall be broken.

A watched pot never boils