He knew women early,

from F. Scott Fitzgerald – The Great Gatsby (Chapter VI) on Rap Genius

Meaning

He lost his virginity early. To “know” women isn’t meant to be interpreted in the literal sense, but rather in the biblical sense, meaning that Gatsby had sexual relations with women early.

To help improve the meaning of these lyrics, visit “The Great Gatsby (Chapter VI)” by F. Scott Fitzgerald and leave a comment on the lyrics box