No need for words, memes or fancy GIFs. Sometimes, all you need to get the point across is a 17th century saying that has aged perfectly.

Fair enough, it's not immediately obvious.

It's an image based on the old phrase "pot calling the kettle black", which basically means that someone is insulting another person when they themselves are guilty of the same thing.

https://en.wikipedia.org/wiki/The_pot_calling_the_kettle_black