How did John Lennon get the nickname the eggman?

John Lennon earned the nickname "Eggman" from his song "I Am the Walrus," where he references the phrase. The term is believed to stem from his association with the character Eric Burdon of The Animals, who referred to himself as the "Eggman." Additionally, Lennon was inspired by the imagery and absurdity that characterized much of his work during that period, which often included whimsical and nonsensical elements. The nickname reflects his playful and surreal artistic style.