Ok, now. Go to the part where Miles arrests his cousin Tony. As you all know, Miles says "Belie' dat" a lot. When Carlson is explaining the story to the other officers he says something like "He said 'Here, take my jacket' ...'What are you doing?' and then he says 'Belie' dat' ....."
If you have a memory that can remember things for five minutes, Miles never said "Belie' dat" when he was walking out into the alley. It's just that he says it so much, so you don't notice it. I KNOW I am right, because I have somehow been at someone's house when they watched it, and the times I have seen it have accumulated to 4.