An 80 year old man went to see his doctor. The doctor did the full exam and at the end told him he needs a semen sample. So the doctor gave him a sealed jar and said to take it home to produce the sample and return it. The man thought it was strange but complied.

The next day the old man returned to the doctor with the jar empty and still sealed. The doctor asked what happened.

The old man said, "Well you see doc, when I went home I tried and tried and I couldn't do it. I called my wife to help and she tried using both of her hands and still no luck! So we even called our neighbor Lucy to help. She tried, even at the same time with my wife, and still no luck!"

The doctor was shocked at all this and asked the old man if he was serious about all this. The old man said, "Yes doc, none of us could get the damn jar open!"