Lyric discussion by ramen_freak 

Actually.... the story goes like this:
George Harrison was writing the song with Eric Clapton, and Clapton mis-read Harrison's musical notation of "Bridge" as "BADGE" and thought that was the title of the song.
A "bridge" in the musical sense is defined as:"a part of a song that seems like a departure from the verses and chorus. Bridges are more prevalent in modern and popular music than in older music from a century ago.

Sometimes the bridge will move up a half a key and convey the song’s innermost message in an even stronger way. Sometimes the bridge will issue an ultimatum to a lover, or even tell the ‘rest of the story.’

Listen to your favorite music. Locate the verse and the chorus. When the song departs from the verse and chorus you have identified the bridge. This departure from the song will be one or two lines long, sometimes four lines long, and almost will always rhyme, even if the verses and choruses do not rhyme."

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