Walter went to his Doctor and asked to have a sperm count.
The Doctor says,"Walter, you've been blessed with a wonderful life. Why would you need this done at your current stage of life?"
Walter replied, "Why not!?"
"OK", says the Doctor. "Put a sample in this jar and bring back right a way"!

Walter comes back later saying, "It couldn't be done! I tried with my right, then my left hand, I even tried with both hands and couldn't do it!! My wife tried with both hands AND even her mouth!!
There is no way the lid is coming off of that jar!!! "