A figure of speech expressing certainty, almost always used to underscore a point just made or emphatically answer a question just asked. Intentionally said quickly so that the words blend together.
Ricardo: Fuck niggah, did you just fart?!
Trey: Ain’tAGoddamnBitADoubtAboutDat! In yo’ face niggah!
Car Salesman: So if you’re ready we can go ahead and finalize this deal right now.
Customer: Tell you what. You let me fuck that pretty little ho standing next to you in that photo over there and I’ll drive off the lot in that new Hyundai right now. Ain’tAGoddamnBitADoubtAboutDat!
Trey: Ain’tAGoddamnBitADoubtAboutDat! In yo’ face niggah!
Car Salesman: So if you’re ready we can go ahead and finalize this deal right now.
Customer: Tell you what. You let me fuck that pretty little ho standing next to you in that photo over there and I’ll drive off the lot in that new Hyundai right now. Ain’tAGoddamnBitADoubtAboutDat!
by Sylvan Montague III August 13, 2019