An old couple are having dinner at a restaurant and the husband leans
over and asks his wife, "Do you remember the first time we had sex
together over fifty years ago? We went behind this very tavern where
you
leaned against the back fence and I made love to you."
"Yes, she says, "I remember it well."
"Ok," he says, "How about taking a stroll around there again and we can

do it for old time's sake?"
"Oh Charlie, you old devil, that sounds like a crazy, but very good
idea!"
There's a police officer sitting in the next booth listening to all
this, and having a chuckle to himself. He thinks, "I've got to see
these
two old timers having sex against a fence. I'll just keep an eye on
them
so there's no trouble." So he follows them.
They walk haltingly along, leaning on each other for support, aided by
walking sticks.
Finally they get to the back of the tavern and make their way to the
fence.
The old lady lifts her skirt and the old man drops his trousers. As she

leans against the fence, the old man moves in. Suddenly they erupt into

the most furious sex that the watching policeman has ever seen. This
goes on for about ten minutes. Finally, they both collapse panting on
the ground. The policeman is amazed. He thinks he has learned something

about life that he didn't know. After about half an hour of lying on
the
ground recovering, the old couple struggle to their feet and put their
clothes back on. The Policeman, still watching, thinks this was truly
amazing. I've got to ask them what their secret is.
As the couple passes, he says to them, "Excuse me, but that was
something else. You must've had a fantastic sex life together. Is there

some sort of secret to this?"

The old man says, "Well, fifty years ago that wasn't an electric fence.