I give her that D, cause that's where I was born and raised in

from Kanye West (Ft. 2 Chainz, Big Sean & Pusha T) – Mercy Lyrics on Rap Genius

Meaning

Finally indulges us after only teasing in the last song. It’s a pun: “D” as in dick, and “D” as in Detroit. Strictly speaking Big Sean wasn’t actually born and raised in Detroit. He was born in California (hence the previous line) but moved to the D at two months old.

Oh, and giving the “D” is always exciting

http://www.youtube.com/watch?v=NEwUx7hfhzg

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