S5·E21 The Lightning Ball Express

Mrs. Howard brings over an old train set for Caillou to play with. Caillou has much fun with it... until he breaks the train! Instead of telling Mrs. Howard, Caillou attempts to hide from her. When his rouse fails, Caillou confesses to breaking the train and is surprised to learn that Mrs. Howards son broke it many a time as a child... and she knows how to fix it!