indeed a good tailor knows and takes into account which side you dress on, when fitting pants... reminded me of a story my brother sent to me recently...
The doctor said, "Paul, the good news is I can cure those horrible headaches you’ve had the last 25 years. The bad news is that it will require castration. You have a very rare condition, which causes your testicles to press on your spine, and the pressure creates one hell of a headache. The only way to relieve the pressure is to remove the testicles. "

Paul was shocked and depressed. He wondered if he had anything to live for. He had no choice but to go under the knife.

When he left the hospital, he was without a headache for the first time in 25 years, but he felt like he was missing an important part of himself. As he walked down the street, he realized that he felt like a different person. He could make a new beginning and live a new life.
He saw a men's clothing store and thought, "That's what I need - a new suit."

He entered the shop and told the salesman, "I'd like a new suit."
The salesman, an elderly tailor, eyed him briefly and said, "Let's see... size 44 long."
Paul laughed, "That's right, how did you know?"
"Been in the business 60 years!" the tailor said.
Paul tried on the suit. It fit perfectly.
As Paul admired himself in the mirror, the salesman asked, "How about a new shirt?"
Paul thought for a moment and then said, "Sure."
The salesman eyed Paul and said, "Let's see, 34 sleeve and 16 neck."
Paul was surprised, "That's right, how did you know?"
"Been in the business 60 years!" Paul tried on the shirt and it fit perfectly.
Paul walked comfortably around the shop and the salesman asked, "How about some new underwear?"
Paul thought for a second and said, "Sure."
The salesman stepped back, eyed Paul's waist and said, "Let's see... size 36."
Paul laughed "Ah ha! I got you! I've worn size 34 since I was 18 years old."
The old tailor shook his head, "You can't wear a size 34. A 34 underwear would press your testicles up against the base of your spine and give you one hell of a headache..."