There were two nude statues, man and woman, standing across from each other in a secluded park. A few hundred years after they've been put in place, an angel fluttered down to them. A wave of his hand, and suddenly the statues had been given flesh, and they step down from their pedestals.
The angel said, "I have been sent to grant the mutual request you both have made after hundreds of years of standing across from each other, unable to move. But be quick--you only have fifteen minutes until you must become statues again."
The man looked at the woman, and they flushed, giggled, and run off into some underbrush. An intense rustling came from the bushes, and seven minutes later, they both come back to the angel, obviously satisfied.
The angel smiles at the couple. "Those were only seven minutes--why not going back and do it again?"
The former statues look at each other for a minute, and then the woman said, "Why not? But let's reverse it this time--you hold down the pigeon, and I'll shit on it...."