WordWorld - Season 1 Episode 28 Mail Mix Up
Overview: Duck offers to help Kangaroo deliver letters to his WordFriends, but he forgets Kangaroo’s instructions and delivers the wrong letters to everyone. Duck discovers that there sure are a lot of words that end with the sound "ail"—such as NAIL, PAIL and SAIL—and that they sure can’t be used interchangeably! Build A Word: NAIL, SAIL, PAIL