The song 'Lucy in the Sky with Diamonds' was written by John Lennon in 1967 for the Sgt. Pepper album. People immediately noticed that the letters of the title spell out LSD. Lennon declared that this was unintentional and coincidental. The story goes that his son Julian brought a picture home that he had drawn at playgroup; Lennon asked him what it was and Julian said that it was 'Lucy in the sky with diamonds'. Lennon then immediately wrote a song about it.
This story is repeated to this day as fact; I just heard it again on a repeat of QI, stated as fact.
I don't believe it for a second.
During 1966, Lennon heavily used LSD to achieve what he described as 'death of the ego'. This may or may not have worked, but John was a very different person after that time. LSD had a major impact on his life, and this song was written just after this time.
From the lyrics:
'Somebody calls you, you answer quite slowly,
A girl with kaleidoscope eyes.'
The song is without doubt a description of a hallucinogenic trip.
I have no doubt that the song is intentionally about the experience of LSD usage. There is still the chance that Julian really did bring this picture home with this title, but it's a fantastic coincidence. Too much of a coincidence for me.
The part that bothers me is that this is simple, common sense. But this story is still stated as fact and not challenged. I think that John made this story up in 1967, as at that time it would not have been commercially or legally wise to admit using hallucinogenic drugs (although, by 1968 John and Paul had got fed up of these cover stories, and admitted it). John obviously didn't want to admit to the world that he had lied, so he continued to maintain the story for the rest of his life. Also, I think it amused him that people are so damned gullible.
What bothers me most is that Julian Lennon clearly believes this story, as does one of his classmates from that playgroup.
Tell a child anything, and they will believe it forever.