"I can't crack this hard nut!" was the answer.  "I've tried and I've tried, but the nut is too hard for me to crack or gnaw!  You see I am only a this-year's squirrel," went on the bushy fellow.  "When I grow older, I will know more about cracking nuts.  But now I am so hungry, and I can't get at the meat in this one!  Oh, dear!"