只求质量，不求速度
A boy crab meets a girl crab and asks her to marry him.She finds that he is walking straight instead of sideways."This crab is really special.I can't let him get away,"she thinks.So they get married. The next day she finds her new husband walking sideways like all the other crabs."You used to walk straight before we get married,"she says."Oh,I can't drink that much every day,"he says.