There was an elderly man who wanted to make his younger wife
pregnant. So, he went to the doctor to have a sperm count done.
The doctor told him to take a specimen cup home, fill it, and
bring it back the next day. The elderly man came back the next
day and the specimen cup was empty and the lid was on it.
Doctor: What was the problem? Elderly man: Well, you I tried
with my right hand...nothing. So, I tried with my left
hand...nothing. My wife tried with her right hand...nothing. Her
left hand...nothing. Her mouth...nothing. Then my wife's friend
tried. Right hand, left hand, mouth....still nothing.
Doctor: Wait a minute. You mean your wife's friend too?! Elderly
man: Yeah, and we still couldn't get the lid off of the specimen
cup.