Karen: Wait a minute, you're using psychiatry on me. I've read all the studies on psychiatry, have you? It's a pseudo-science and it doesn't exist. And neither do postpartum depression or Brooke Shields.
This is a reference to Tom Cruise's recent public faux pas with Oprah Winfrey (where he criticized Brooke Shields for taking anti-depressants for postpartum depression) and Matt Lauer (where he claimed to be an expert on Psychiatry by having read all the reports and claimed that Matt knew nothing of it).