Pine cone - "all gone"

Just when I thought Brock was passed the stage of putting things in his mouth...
HE EATS A PINE CONE! He and ma found a "tiny pine cone" at the park yesterday. He was carrying it around for a while and then my mom noticed him chewing on something and no pine cone. He chewed and swallowed it and then said, "pine cone all gone". He must have needed the fiber or something. He seems to be doing fine and he still talks about eating the pine cone. STRANGE!