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 the village tavern where you leaned against the back fence and I made love to you.
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Yes, she says, I remember it well.
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OK, he says, How about taking a stroll around there again and we can do it for old times sake?
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Oh Jim, you old devil, that sounds like a crazy, but good idea!
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A police officer sitting in the next booth heard their conversation and, having a chuckle to himself, he thinks to himself, Ive got to see these two old-timers having sex against a fence. Ill just keep an eye on them so theres no trouble. So he follows them.