"Judas" is slang for heroin, and Julian was supposedly used for misdirection once before, in the story behind the song "Lucy in the Sky with Diamonds" (initials: LSD), which is said to be based on a picture he painted. People point to the lyrics for further proof: Remember to let ...
The Beatles classic 'Hey Jude' was written by Paul McCartney for John Lennon's first son Julian.