These two blokes were sitting on the beach. One of them moaned to the other, "How come you always get a nice girl? I can never get a girl myself at all!"

His friend replied, "Well, I'll give you a tip. Get a potato and put it down your swimming trunks and just you wait. The girls will be swarming all over you in no time."

A few hours later the bloke came back to his friend and said, "Well that didn't work - in fact people just seemed to laugh at me!"

His friend looked at him and said, "You're supposed to put the potato down the FRONT of your trunks, you idiot!"