Who said it: Jared Gilman in Moonrise Kingdom (2012)
Argument: Over your parents' rejection of global warming.
You may not be the smartest guy in every room, but you definitely are in this room, by default. Your parents' toxic Fox News diet has formed parasitic worms that are gradually draining common sense from their brains. Don't bother raising your voice—nod your head and lovingly tell them that they are absolutely wrong.