Rabbit had just lost a race to turtle and had proposed a rematch. Seeing he should have won last time, rabbit wasn't going to make the same mistake. To even the odds, he let turtle have a head start. Turtle was worn out from the last race and was trying to think of an easy way to win. He figured something out and told it to rabbit. Rabbit thought about it and decided he couldn't win because of it. What did turtle say?