^clayy!! thats calcium deficiency!!!! my little cousin had that!! ewwwww...the doctors ran some some tests...and turned out...he needed calcium...!! poor thing.
One day we were all having dinner, turned around and saw my 2.5 yo cousin licking the fire place. We asked him what he was doing. He said "licking." His father (who is a doctor) was not concerned at all and continued with his meal. He explained the deficiency.
Still weird.
I loved his nonchalant reply, "licking."