All about my dough but I don't even check the peephole
So you can keep knockin', but won't knock me down
“Dough” is a homophone for “do'”, the ebonic pronunciation of door.
These lines connect with two themes:
Opportunity is knocking and he doesn’t check the peephole; he just lets the money in.
Also, knocking on the “door” (do'), as in knocking/talk trash about what he’s doing is irrelevant to him, because he doesn’t even pay attention to them knocking.
The second line also refers to Little Richard’s “Keep a-Knockin'”, where a lover isn’t allowed inside because they behaved badly. In this case it is a metaphor for how hip-hop treated him.
“peephole” could also be a homophone for the word “people"
As in Wayne saying I’m all about the dough I don’t even check the people; meaning he’s all about the money and it doesn’t matter who he does business with.
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