There's no such thing as free money, and while this series of clever bets will all but guarantee you some easy cash, it will probably come at the cost of a few friendships.

Richard Wiseman continues his long series of bets you can't lose, and it makes you wonder why he's not amassed a small fortune to retire with by now. Perhaps he just ran out of friends. So remember, bet big right from the start, because it won't take long for your victims to catch on.