A man was playing a game of golf, and on hole 16, he hit the ball right
into a field of buttercups. As honest a golfer as he normally was, he
picked up the ball and laid it next to the flowerbed to avoid destroying
the beautiful buttercups. A fairy comes down and says "thank you for not
disturbing my buttercups. For that I shall make sure that you always have
a full supply of butter".
"Thank you," the golfer replied, "but where were you last week when I hit
the ball into the pussywillows?"