I destroy your 4.0's

from Jay Z – Reminder Lyrics on Rap Genius

Meaning

Another double entendre:
Could be referencing Range Rover 4.0’s

Or he could be referencing the fact that he did all of this without a diploma

This is probably a reference to a track of his called “Imaginary Players” where Jay encouraged rap artists to step they game up and get the 4.6 at a time when 4.0s were really popular.

What’s the difference between the 4.0 and the 4.6?
Like 30 to 40 grand, cocksucker, beat it!

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