Bill is at the doctor’s office. The doctor says, “I suspect that you might have prostate cancer, Bill.”
Handing Bill a sample jar, the doctor says, “I need a semen sample from you. Bring this back tomorrow for further tests.”
Bill returns to the doctor the next day and waits on the examining table. When the doctor comes in, Bill hands him the sample jar—empty.
The doctor say, “Now, Bill, I know that this might be unpleasant for you, but I really need that semen sample!”