A married couple and a good-looking sailor swam to an island after the shipwreck.
One morning the sailor climbed up a tall tree and shouted, "Please! Stop having sex down there!"
When he came back down, the husband said, "What's your problem? We weren't having sex!"
"Oh, my apology," said the sailor. "You see, from up there it looked like you were."
Three days later the husband decided to climb the tree to get a broader view. As he reached the top, he murmured, "Oh, he's right, it does look like they're having sex down there."