I just chopped out this entry:  
 ::It is believed that the first rock song to have the word fuck is The Doors' song "The End" on :their self-titled 1967 album "The Doors". The line containing the word is "Mother, I want to fuck you". Jim :Morrison screams out the last two words so that they can't be heard clearly. Another early example of the use of fuck is John :Lennon's 1970 song "Working Class Hero" in the lines: 
 :::They hurt you at home and they hit you at school 
 :::They hate you if you're clever and they despise a fool 
 :::Til you're so fucking' crazy you can't follow their rules 

 ::The Beatles also seem to have used the word in the song Revolution 9 in the line "join the fucking navy." 

 Jim Morrison does not say the word 'fuck' on the first Doors album, though he implies it. The claim that this was the first use in a rock song has no source. There's nothing significant in John Lennon and the Beatles' use of the word, since it had been used plenty of times before.