S4·E54 Caillou's April Fool
Aired June 2, 2006
Synopsis
Daddy plays an April Fool’s trick on Mommy, setting all the clocks ahead one hour. They explain all about April Fool’s Day to Caillou, who is determined to join in the fun. The hard part however, is thinking of a good trick to play. After a couple of unsuccessful attempts, Caillou plays a couple of good tricks on Mommy and on Daddy too. April Fool!