[theDarkOne]

Originally Posted by snarkopo

I have often heard "Lucy in the Sky with Diamonds" was about LSD. I've tried that but can't say I can tell if that's true about the song.

Inspiration for the song came from a drawing by John Lennon's son, Julian, which Julian called "Lucy in the Sky with Diamonds". The song also sparked controversy when released, including being banned by the BBC because of the supposed reference to the drug LSD, with the letters of the title spelling Lucy in the Sky with Diamonds. Lennon would later deny the reference during an interview with Rolling Stone.

http://en.wikipedia.org/wiki/Lucy_in..._with_Diamonds

So says the brain trust at Wikipedia