Question: is tu quoque a fallacy?
Answer: Tu quoque. ... Tū quoque (/tjuːˈkwoʊkwi, tuːˈkwoʊkweɪ/; Latin for "you also"), or the appeal to hypocrisy, is an informal fallacy that intends to discredit the opponent's argument by asserting the opponent's failure to act consistently in accordance with its conclusion(s).