An elderly man goes to his doctor for a physical. Everything checks out fine, but the doctor asks him to bring in a sperm sample.
The next morning, the man returns — holding the jar empty.
The doctor asks, “What happened?”
The man explains: “I tried with my right hand, then my left, then both — nothing. My wife tried every way she could — still nothing. We even called our neighbor to help. She tried everything too… still nothing.”
The doctor, shocked, asks, “You asked your neighbor?!”
The old man shrugs: “Well, none of us could get the jar open!”
