Humour is great and Andy has shown many times he has one of the best senses of it. But talking yourself down, even in a humorous or light-hearted way, often denotes a state of mind. Can you imagine Fed or Rafa or Novak ever saying they had no chance to win anything that they haven't yet won even as a joke?Come prepared or don't come at all. I'm prepared for the first round elimination.
Lose our humor and we lose everything.
PS. Who is that in your picture?