In '68,John and Yoko were living with Paul and his girlfriend at the time,Francie.
One breakfast John gets an "anonymous" note--'You think you and your Jap tart are hot s***'. Paul denies this and then writes it off as a joke
This 'joke' is what I feel ended the Lennon/McCartney partnership.
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Tim
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The Church Beatle will now pass among you,and no foreign coins please.