S05E36 - Who's too Scared to Masquerade?
Synopsis
Cousin Russ is planning a great masquerade party, but the little kids are worried because it's going to have a spooky theme. The little kids like dressing up in costumes, but they don't want to get scared. Then they realize there's safety in numbers and they all go together in one big costume, which gives Russ and the older kids a real fright.