Here's mine: in the song For You Blue by the Beatles, there's a section where Lennon takes sort of a minimalist guitar solo and Harrison can be heard in the background saying "Go Johnny, go!". Then he says what I think is "Elmore James ain't got nothin' on this, baby!".
Once while this song was playing on the radio at work, one of my coworkers looked at me and asked (in total seriousness) "Why does he say Elbow James ain't got nothing on his finger?"

