What is the name of the black rapper with one huge gauge?

I was watching a video the other day and there was a rapper (I think his name is nitro) who has some song out and in it he says something like "you wouldnt believe that I write those raps" and the video is him at a bunch of random places. It’s a new video and I would like to know the name of his song to. I have no other descriptions.

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