Name Change?

• Today Speedy and I were being silly looking at each and he says to me “my name is [said his full name]”.  I said “oh ya, do I know you?”, he laughs.  I then said “do you know who gave you that name?”, he didn’t know, I said “me and Daddy”, he said “no, when I was a baby you called me [his younger brother's name]”, I told him his name has been [his full name] since he’s been born, but he was persistent that I was wrong.  Oh he makes me laugh.