The husband leans over and asks his wife, 'Do you remember the first time we had sex together over sixty years ago? We went behind the village 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 Jim, you old devil, that sounds like a good idea!'
The elderly couple walks 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..
Then suddenly they erupt into the most furious sex that the policeman has ever seen. This goes on for about ten minutes while both are making loud noises and moaning and screaming.
A passing cop hears the noise and looks down the alley, and stops in amazement.
Finally, they both collapse, panting.
The cop runs up and asks "Are the two of you all right? Do you need an ambulance?
They insist no, they'll be fine, as they rearrange their clothes.
The officer says, as they start to leave, "I'll leave off the lecture about behavior in public, but I have to ask: at your ages I'd not have expected that kind of, ah, effort, so how'd you do it?
Shaking, the old man is barely able to reply, 'Sixty years ago that wasn't an electric fence.'