What does A-a-ron Speak mean?

A-a-ron Speak meaning in Urban Dictionary

whenever a black guy, whilst in a group of non-black folks encounters a black person and instantly switches to an overdone bonnet rat voice in order for no person else but the other black colored individual can determine what he is saying.Named after the design "Substitute Teacher" through the tv show "Key & Peele" by which a ghetto teacher mispronounces the commonplace names regarding the white children inside the class