A beautiful female doctor is very popular among her male patients and has many romantic, wealthy suitors. Of course, she also faces considerable unwanted attention.
One day, after examining Mr. Chen for infertility at the hospital, the doctor needed to check if his sperm count had decreased. She gave him a small, sealed glass jar and asked him to provide a sample at home and bring it back.
The next day, Mr. Chen returned, but the doctor found the jar still empty.
Mr. Chen explained: "Yesterday, I tried with my right hand for a long time, but nothing happened. Then I tried with my left hand, still no luck. I asked my wife to help. She tried with both hands, but it didn't work either. Then I asked her to use her mouth, but she couldn't manage it at all."
Hearing this, the doctor blushed with embarrassment. However, Mr. Chen continued: "Just then, my cousin came to my house with a gift. She's younger and stronger, so I begged her to help. She also tried with her hands first, then with her mouth, putting in a great effort..."
"Stop! Stop!" the doctor couldn't bear it any longer and interrupted, "You asked your cousin to help with such a thing?"
Mr. Chen went on: "She was very willing! But she couldn't do it either. So, I came to you to see if you can..."
Hearing this, the doctor asked angrily, "What do you want me to do?"
Mr. Chen replied, "...to see if you can get the lid of this glass jar open?"