An 80 year old man is given a jar to provide a sperm sample for the doctor.
He turns up 2 days later with an empty jar.
The nurse asks why no sperm sample?
He replied: ' Sorry, I have tried with my right hand and then my left, then the wife tried with both hands, then her mouth, first with her teeth in then with her teeth out, then we got Ethel from next door to try but it was no good!
We just can't get the jar open!!!!
Magnum
Future Spaceship Captain............and Saga prospect