An elderly couple were celebrating their ten-year anniversary in the very bar where they first met. The old man leans over and convinces his wife to sneak out back and make love against the same fence where they made love for the first time.

A cop overhears them and decides he could use some amusement, so he follows them out back. He watches as they fumble out of their clothes and has to hold back laughter as they hobble toward the fence.

All of a sudden the couple starts making the most passionate, primal, and lustful love he has ever known. For ten minutes they were clawing, scratching, and biting each other, screaming out in animal lust the whole time.

When they were done, the cop is amazed! I can't even make love like that now, he thinks. I must ask them.

After they put their clothes on, the cop steps out and asks the old man, "Excuse me sir, but I must tell you that I am humbled by what I just witnessed....can you tell me, is their some secret to youth, love, and passion the two of you discovered?"

The old man was still trembling and could barely answer, "Ten years ago.....that fence wasn't electrified!"