Middle names?

Do you ever wonder why we have middle names? The only time I can recall using mine was when filling out important government documents. And the only time I can recall someone using my middle name was when I was getting in trouble from my parents. For some reason when your parents used your middle name you realized that they were serious whereas when they called you by your first name only they were less serious???

Andrew and Sam were playing with their train set today. Apparently Samuel knocked over the bridge and Andrew was upset with him. I overheard Andrew say: "SAMUEL JAMES THAT'S BAD, DON'T DO THAT."

The thing that made me chuckle was that Samuel's middle name is Michael not James but Andrew's middle name is James. I guess Andrew meant serious business!