A guy is stranded on an island with only a Doberman and a pig for
   company. There's
   plenty of food and water, and the weather is beautiful, so he's doing
   alright--but after a few
   months he gets "lonely", if you know what I mean. The pig starts to
   look more and more
   attractive--soft, pink flesh, round buttocks, etc. But every time this
   poor guy makes an
   advance towards the pig, the Doberman snarls at him and once almost
   bit his leg. One day
   the guy sees a speck on the horizon, so he swims out there and it
   turns out to be a dinghy,
   cast adrift, and in the bottom of the boat is a beautiful woman,
   unconscious. He drags her
   to shore and brings her into his hut and slowly nurses her back to
   health. Finally she is
   well enough to walk and she says to him "Thank you, thank you for
   saving my life. I don't
   know how I can ever repay you. I'll do anything for you, anything,
   just name it." The guy
   thinks for a minute and says "Would you mind taking my dog for a
   walk?"