The pot calling the kettle black
Definition 1 of 1
Pro Tip 1/3Self-Awareness
Use when someone lacks self-awareness by criticizing a fault they also have. 
She accused me of being disorganized, but really, that's the pot calling the kettle black.
Pro Tip 2/3Informal Situations
Typically used in casual conversations rather than in formal writing or speeches. 
During the family reunion, Uncle Joe said that's the pot calling the kettle black when teased about his cooking.
Pro Tip 3/3Irony Highlight
Often comes across as ironic or humorous because it points out an obvious contradiction. 
Saying I talk too much? Talk about the pot calling the kettle black!