Claiming the argument is flawed by pointing out that the one making the argument is not acting consistently with the claims of the argument.
Examples:
- Helga: You should not be eating that... it has been scientifically proven that eating fat burgers are no good for your health. Hugh: You eat fat burgers all the time so that can’t be true.
Synonyms: appeal to hypocrisy, “you too” fallacy, hypocrisy, personal inconsistency