Wisdom or Prophecy?

Jake and the boys were getting ready to go to Granny and Granddad's house in the morning.  Jake grabbed a banana to take as either breakfast or a snack.  Sawyer tells him "you should put that in a bag" but Jake lets the advice roll off his back and sticks the banana in his jacket pocket.  When they get to Granny and Granddad's house Jake notices his jacket pocket is moist.  He tells Sawyer that his jacket is moist and it's from the banana.  Sawyer, with a not-nearly-surprised-enough forJake look tells Jake something to the effect of, "You should have listened to me."  When Jake told me this tale I remarked, "Now we know he's a prophet."