Well, I've got an idea," said Rabbit, "and here it is. We take Tigger for a long explore, somewhere where he's never been, and we lose him there, and next morning we find him again, and--mark my words--he'll be a different Tigger altogether." "Why?" said Pooh. "Because he'll be a Humble Tigger. Because he'll be a Sad Tigger, a Melancholy Tigger, a Small and Sorry Tigger, an Oh-Rabbit-I-am-glad-to-see-you Tigger. That's why." "Will he be glad to see me and Piglet, too?" "Of course." "That's good," said Pooh. "I should hate him to go on being Sad," said Piglet doubtfully. "Tiggers never go on being Sad," explained Rabbit.
A.A. Milne, The House at Pooh Corner
bouncing, lesson, piglet, sad, tigger