tu quoque

noun2

1. •
   [before a noun] An argument whereby an accusation or insult is turned back on the accuser; same to you

   • And then they meet us with miserable tu quoques—tu quoques, gentlemen, which are the meanest form of logic, and, in my opinion, the most contemptible development of statesmanship. — 1890
2. •
   (slang, no longer used) The vulva or vagina.