An 85-year-old man visits his doctor to get a sperm count. The geezer’s given a jar and told to bring back a sample. The next day he returns to the doctor’s office with an empty jar.

“What happened?” says the doc.

“Well,” the old man starts, “I asked my wife for help. She tried with her right hand, then her left—nothing. Then she tried her mouth, first with the teeth in, then with the teeth out, still nothing. We even called in Arlene, the lady next door, but still nothing.”

The doctor bursts out, “You asked your neighbor?”

“Yep. No matter what we tried, we couldn’t get that damn jar open.”