Mathers, Jerry.And Jerry Mather as 'The Beaver'.

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Call Me Lumpy: my Leave It To Beaver days and other wild Hollywood life. Lumpy's character plays a major role in the short film 'Darwin's Tears'. Lumpy is married and has a daughter, J.J. Previously, both men had worked for Fred Rutherford's company until Fred fires Lumpy, and Beaver resigns. As with their fathers, it is never specified exactly what the scope of the business is. Lumpy and Beaver form a successful business partnership (the 'Cleaver and Rutherford Co.'). In another episode, Wally and Eddie Haskell play a prank on Lumpy that involves the rear axle of his car being removed with a chain. When Lumpy wins a college football scholarship in a later episode, June Cleaver throws a party and bakes a cake in the shape of a football field. Beaver responds by yelling at Lumpy from a distance 'Lumpy Dumpy looks like an ape.' Several references are made that Lumpy plays the clarinet, and later plays the tuba. Lumpy often persuades others to do things that he is really too afraid to do himself. He is a very hefty young lad and is often teased because of it. Lumpy is not the brightest fellow in Mayfield. Violet gives Beaver a black eye in an early episode. Fred would also call Lumpy a 'big boob' or a 'big oaf.' Lumpy's mother Gwendolyn ('Geraldine', in some early episodes) and his younger sister, Violet (who is about Beaver's age), round out the family. He is well known for referring to his father as 'Daddy.' Fred would tell Clarence he was too old or too big (usually referring to his 'lumpiness') to call him 'Daddy.' A running gag on the show was to have Fred, who always referred to his son as Clarence, call him 'Lumpy' when angry. In the third-season episode 'Wally's Test,' Lumpy's first name is spelled Clarance, not Clarence. They are in the same class together at school, in spite of a three-year age spread between the two. Although a touch of the bully never leaves Lumpy, he eventually becomes Wally's friend. The boys plot Lumpy's comeuppance, but the plot backfires when Fred accidentally steps into the trap. The Rutherfords live somewhere in the Cleaver neighborhood, which gives Lumpy the opportunity to bully the Cleaver boys on their way home from school. Lumpy is introduced to the viewer in the first-season episode 'Lumpy Rutherford.' He's the 16-year-old son of Fred ( Ward Cleaver's co-worker).

Lumpy leave it to beaver