Her name was Magil and she called herself Lil
But everyone knew her as Nancy

from The Beatles – Rocky Raccoon Lyrics on Rap Genius

Meaning

She uses multiple names because she likes to court multiple men at once.
http://www.youtube.com/watch?v=JxsfEio0L8Y

Also, Nancy is a cuter name than “Magil” — she is tryna be appealing rather than being real

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