Whatever your size is
You lay it flat then iron it
And if you fight it, its like David verse Goliath
Cause that skin you supposed to hide it
Dress it up and deny it

from Lupe Fiasco (Ft. B.o.B) – Who Are You Now Lyrics on Rap Genius

Meaning

David verse Goliath is a story in the Bible of a giant (Goliath) fighting a young man (David) demonstrating an “unfair fight.” She is left with no other option than to embrace herself, and chooses to hide herself under fashion.

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