Guy gets washed up unconscious on a desert island. When he comes to he finds Kylie Minogue next to him. They get talking and after a few days they're quite friendly. Before long they've set up house and she's cooking for him. Then, he's over the moon because she agrees to share his bed. He's going around with a big grin on his face.
One day she notices that he's really down in the dumps. This continues the next day and the day after. Kylie asks him what's up but he won't say. She persists and he says that if she'll do something for him then he'll get over it. She's a bit reluctant but agrees to listen. "All I want ", he says, "is for you to mess your hair up a bit, put some mud on your face and then walk clockwise round the island. I'll walk anti-clockwise and we'll meet halfway".
"OK" she says and she does the cosmetics and they set off in opposite directions. When she's gone a fair distance she sees him coming towards her and he's running really fast. He comes racing up to her, all out of breath but with a big grin on his face, and shouts "Hey! You'll never guess who I'm shagging! Kylie Minogue!