This guy was stranded on a desert island with Cindy Crawford. He was cool, and he didn't make any moves towards her for several weeks.

Finally one day he asked her if maybe they could start up a physical relationship, so as to attend to each other's needs.
Cindy said she was game, and a very nice sexual relationship began. Everything was great for about 4 months.

One day the guy goes to Cindy and says, "I'm having this problem... It's kind of a guy thing, but I need to ask you a favor."
Cindy replied "Okay."
He says, "Can I borrow your eyebrow pencil?"
Cindy looks at him a little funny, but answers, "Sure, you can borrow my eyebrow pencil."
The guy then says, "Do you mind if I use the eyebrow pencil to draw a mustache on you?"
Cindy is getting a little worried, but says "Okay."
And so the guy draws a mustache on her. Then the guy said, "Can you wear some of my guy clothing? I need for you to look more like a man."
Cindy is getting a little disappointed at this point, but says "I guess so," and puts on some of his clothes.
Then the guy says to Cindy, "Do you mind if I call you Fred?"
Although Cindy is now feeling very dejected, she says "Yea, I guess you can call me Fred."

So then the guy reaches out, grabs Cindy by the arms and shouts "Fred -- You won't believe who I have been sleeping with these past 4 months!!