So if I talk down to a man
Not only do I enlighten but I provide a tan

from Wale (Ft. Kingpin Slim & Torae) – Sharp Lyrics on Rap Genius

Meaning

By now, we’ve established that Wale is bright (like the sun)

So, by that logic, when he is talking down to someone (also known as sonning someone) he makes them wiser (en-light-en) as well as tan their skin with his heat and light.

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