S5·E13 No Tradebacks!

Caillou decides to trade his tiny toy shovel for some stickers... but changes his mind when he sees what his friend, Jay, can do with that toy shovel! Then Caillou tries to get the shovel back even though they agreed to no tradebacks and eventually hurts his friends feelings. When Caillou realizes Jay is upset, he decides to stick to his word, knowing that their friendship and his word - is more important.