US /pɑt ˈkɔlɪŋ ðə ˈkɛtl blæk/
UK /pɒt ˈkɔ:lɪŋ ðə ˈketl blæk/
So, we say, "It's like the pot calling the kettle black." So, there's a pot and the kettle.
So we say it's like the pot calling the kettle black.