One day, a man on vacation got stranded on a deserted island. The only thing he saved was a piece of rope, a sheep and a dog.
Days went by and after a while, he was starting to dream about sex. After giving it some thought, he tied the sheep to a tree. The only problem was, every time he tried to get close to it, the dog would attack him.
The same thing kept happening until one day, the man heard a woman screaming. He rushed to the other side of the island and saw this beautiful woman about to drown.
He jumped into the water and dragged her to safety on the beach.
Once she got her breath back, she exclaimed, 'You saved my life! How can I pay you back?'
He replied quickly, 'Here, hold my dog for a moment!'