When I was a kid, there was a tradition that adult men were called "Mister", and boys were called "Master". I never liked that designation. My name was "Walter". I didn't like being called "Master Walter". It just seemed kind of stupid to me. I would be introduced in formal settings with my parents as "Master". That word also had other connotations to me as being the one in charge of things, and I certainly wasn't in charge of anything.
As time went on, I cringed at being called by that word. Either introduce me by my first name or not at all. So, one day, my father and I were in Georgetown, SC. He was down there to preach in a church one Sunday, and I tagged along. I was about 12. That Saturday, he took me to a barber shop to get a haircut. When we walked into the shop, the barber immediately knew we weren't his regular customers. My father introduced me as his son Walter. The barber said, "Have a seat, Mister Walter." That was the first time anyone had called me "Mister". I was so excited, that I strutted up to the barber chair. I was no longer a master. The barber also used a straight razor on my face, even though I had nothing there except peach fuzz. That was a little scary, since nobody had done that before either. One wrong move, and there would be blood. I held still basking in the happiness that I was a "Mister".
After my father finished his preaching, we headed back to Columbia. On that trip back, he told me the facts of life. I already knew about the birds and the bees before his lecture in the car. After all, I was now a Mister. I let him go through the story, though. That's what polite misters do.