Disappearing Ear?

In case you missed it, my 4 year old had a bad cut on his ear and we had to go to the ER where they put glue on it. More than 2 weeks have passed now and the glue is just starting to peel off and the scab is going away. When I gave my son a bath last night I checked behind his ear and told him that "the boo boo is almost gone." Later I heard him telling his older brother, "My ear is almost gone now."