If Obama wasn't a coward he would literally attack Iran right now, like he would dress up in a big eagle suit and run at the border fence to Iran and start punching the fence and be like "SEE TRUMP! I am doing it! I started the war before you!!!" while Iranian border guards calmly waved from behind the fence.
If I was Obama I would also write "secret nuclear bomb program" on a nerf ball and throw it over the fence and then start screaming about how I found incontrovertible evidence of Iran's nuclear bomb program while pointing at the ball.
The camera would zoom in on the nerf ball with the haphazardly written sharpie on it saying "secret nuclear bomb program" while I mumbled in triumph and the US would realize how insane it was for a brief second.
I wonder if that golfer in chief website that tracked Obama’s golf outings does the same for Trump… but if conservatives didn’t stand for hypocrisy, they wouldn’t stand for anything
So the earliest we have of this kind of saying is from Don Quixote where it is about deflecting hypocritical criticism from the 1600s. The shiny kettle/black pot version is more recent one gaining prominence in the late 1800s.