Beaver's class's assignment is to write a composition about their mothers. Many of the kids tell Beaver about their moms, who have good jobs or have had interesting past experiences. Beaver then talks to June, who says she worked in a store once but otherwise has little to tell. As usual, the Beav starts feeling inadequate and dreads telling his class about June's boring former life.
That night, Beaver watches an interview show about a glamorous movie/stage star who recounts that she ran away from home at an early age, became a chorus girl and performed in dives, later associating with gangsters before she hit the big time. Beav naturally decides to ridiculously embellish his mom's life story.
The next day Beaver reads his composition, complete with stories of gangsters, chorus girls, dives, and scandalous behavior. He also says that Ward was a tap dancer when June married him. This wild story delights his classmates but worries Mrs. Rayburn, who calls the Cleaver household and tells them about June's fictitious "life". Properly humbled, Beaver has to admit that he made everything up.
I always laugh out loud when Beaver reads his wild story, particularly at Larry Mondello's, Mrs. Rayburn's, and Whitey's reactions to it. This is a very good episode that will have you laughing when you remember the crazy stories you told in school. Great fun.