When did John Lennon go coo coo?

Lennon was always crazy! when he was a young boy he went on the roof on buses and ride them like that until his stop. He got suspended from school for showing a girl his private part. His life was difficult, he foun out his aunt stole him when he was a kid right after his grandfather died. He lost his mother right after he finds out her house was right around the corner but his aunt Mimi didnt tell him. So yeh he was ALWAYS CRAZY!!