Your Argument Is Invalid is a great phrase to throw someone off in a debate, and this goat-on-a-bike shirt is a great shirt as well.
Your Argument is Invalid is a popular catchphrase often used as a playful counter-response in online discussions. In debates of logic, the argument tactic is also known as argumentum ad hominem, which describes “any attempt to link the validity of a premise to a characteristic or belief of the person advocating the premise.”
