"Hampered by Headaches" joke

Jim was fairly successful in his career, but as he got older he was increasingly hampered by terrible headaches. When it got to the point where his personal hygiene and love life began to suffer, he sought out medical help.
After being referred to one specialist after another, he finally came upon a doctor who was able to solve the problem. "The good news is, I can cure your headaches," the doctor said. "The bad news is, it will require castration. You are suffering from a very rare condition which causes your testicles to press up against the base of your spine. The pressure creates one hell of a headache. Removal of the testicles is the only way to relieve the pressure."
Shocked and depressed, Jim wondered if he had anything to live for. Although he wasn't able to concentrate long enough to answer, he knew he had no choice but to have the surgery.
When he left the hospital, his mind was clear, 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.
As he walked past a men's clothing store, he thought, "That's what I need, a new suit. He entered the store and told the salesman that he would like a new suit.
The salesman eyed him for a moment and said, "Let's see... size 42 long."
"That's right, but how did you know?" Jim laughed.
"It's my job."
He tried on the suit and it fit him perfectly. As he stood admiring himself in the mirror, the salesman asked, "How about a new shirt?"
Jim thought for a moment and replied, "Sure!"
The salesman looked him over and said, "Let's see... 34 sleeve, and 16 neck."
Jim couldn't believe it. "That's right, but how did you know?" he asked.
"It's my job."
Jim tried on the shirt and it fit perfectly too. As he adjusted the collar in the mirror, the salesman asked, "How about a new pair of shoes?"
"Sure, why not!" Jim said.
The salesman looked at Jim's feet and said, "Let's see... size 10 wide."
"That's right, but how did you know?" asked an astonished Jim.
"It's my job."
Jim tried on the shoes and found that they fit perfectly. He walked comfortably around the store and the salesman asked, "How about a new hat?"
Without hesitation, Jim replied, "I may as well. Sure!"
The salesman eyed Jim's head and said, "Let's see... 7 5/8."
Jim was astounded. "That's right, but how did you know?" he asked.
"It's my job."
The hat fit to perfection. Jim was feeling great, when the salesman asked, "Now, how about some new underwear?"
Jim thought for a moment and said, "Sure!"
The salesman took a step back, eyed Jim's waist and said, "Let's see... size 36."
Laughing, Jim replied, "Oh no. I've worn a size 34 since I was 18 years old."
Shaking his head, the salesman said, "I'm sorry sir, you can't wear a size 34. It would press your testicles up against your spine and the pressure would give you one hell of a headache!"