Stuff And Nonsense Meaning

(idiomatic) rubbish, foolishness, poppycock

Example: 1859, George Eliot, Adam Bede, Chapter XL,
  "Stuff and nonsense!" said Bartle, forgetting in his irritation to whom he was speaking. "I beg your pardon, sir, I mean it's stuff and nonsense for the innocent to care about her being hanged. […] "
1865, Lewis Carroll, Alice's Adventures in Wonderland, Chapter 12,
  â€œIt’s a pun!” the King added in an angry tone, and everybody laughed. “Let the jury consider their verdict,” the King said, for about the twentieth time that day.
  â€œNo, no!” said the Queen. “Sentence first—verdict afterwards.”
  â€œStuff and nonsense!” said Alice loudly. “The idea of having the sentence first!”
1908, Lucy Maud Montgomery, Anne of Green Gables, Chapter XXVI,
  "I wrote it last Monday evening. It's called 'The Jealous Rival; or In Death Not Divided.' I read it to Marilla and she said it was stuff and nonsense. Then I read it to Matthew and he said it was fine. That is the kind of critic I like. […] "