The Dog Who Cried Woof Clifford the Big Red Dog : Season 1 Episode 26

After overhearing Samuel tell the kids a scary story about Whiffy the Skunk Ghost, Clifford and T-bone get a bit spooked. Cleo takes the opportunity to play a series of naughty tricks on them, but then finds them not believing her when she really needs them! She learns that it isn't nice to play tricks on people.