An 85 year old man went to the doctor's office to get a sperm count.
The doctor gave him a jar and said "Take this jar home and bring back a semen sample tomorrow".
The next day the old guy reappears at the doctors office and gaves him the jar, which was clean and empty as on the previous day.
The doc asked what happened and the man explained.
"Well doc, it's like this-first I tried with my right hand, but nothing. then I tried my left hand, still nothing. Then I asked my wife for help. She tried her right hand, then her left, still nothing. She tried with her mouth, first teeth in, then with her teeth out, and still nothing. We even called up Ruth the lady next door and she tried too. First with both hands, then an armpit, and she even tried squeezin' it between her knees, but still nothing"!!
The doctor was shocked. "You asked your neighbor???"
The old guy replied,"Yep. And no matter what we tried we still couldn't get the jar open.