What is egghead jr?

Some articles on egghead, jr, egghead jr:

Clyde Rabbit - E - Egghead, Jr.
... Egghead, Jr ... Egghead, Jr ... The only child of Miss Prissy, a widow hen, Egghead, Jr ...
List Of Tiny Toon Adventures Characters - Minor Characters - Egghead Jr.
... Egghead Jr ... greatly resembles Elmer Fudd, (who himself had evolved from an earlier character named Egghead) ... "Egghead Jr." also appears in Hog Wild Hamtom, but this time is redrawn as the actual Egghead Jr ...
Little Boy Boo - Plot
... The little boy - Egghead Jr ... Foghorn immediately catches on to this and sets out to win his audition by showing Egghead Jr ... has never participated in any of the below-listed events before, Egghead Jr ...