A NEGRO(Black American),with traits that is similar to Pretty Boy ( isn't very intelligent, who will not shut up.)It's typically a cover for their own inferiority.
Coined After Floyd Mayweather, Jr.'s trait(eg:shit talking on someone)

BY:UbecBoy!
Don't go pretty-boy-mouth on me now!
ass mouth
by Pretty Boy mouth August 22, 2014
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