From Science Encyclopedia
Sometimes known as the greatest band since bands were bands. Many modern bands owe a great deal to these for Liverpudlians.
They didn't all sing at the same time the whole time.
John Lennon married Yoko Ono, and she was blamed for breaking them up. Hence the term Yoko-ed, as in "that band split up, they got Yoko-ed". It means one of the members women got in the damn way. "Yoko" can be cured by writing songs about murdering babies, or kicking pregnant women.