What is in a name?

I love the way that small people and (probably big people) clearly identify themselves by their name.  This afternoon my youngest child who has just turned 4, properly answered the phone for the first time using his own name.  His whole name. He has two middle names and he was adamant that he should let the person on the other know who it was they were speaking to!  The problem was that the person on the other end could not get a word in edge ways because of the importance of his name, his whole big long name.  Priceless!