oath-tacking
Oath-tacking is like saying you're going to eat a salad, but then you end up eating a whole pizza and acting like you never promised anything.
The mayor said he'd help the poor, then gave all the money to his dog.
The senator took an oath to help the people, then spent all the money on a new car for himself.
The governor promised to save the city, then let it burn down because he was too busy playing video games.