When Brenda is eating the sandwich at Mildred's she takes the first bite from the center. When she takes a second bite the first has moved to the corner.
When Harry comes to pick up Brenda and the kids to drive back down to Georgia, he is in a navy blue SUV with shiny silver hub caps. However, when they pull up to the Brenda's new house left by her father, they are not in the same SUV. The SUV now has a different set of white hub caps.
The opening lid on Pop Browns casket changes positions several times during the funeral scene.
While Michael is making the oatmeal, you hear the sound of the oatmeal hit the bottom of the pot. Before they start dancing, he never turns on the stove or puts water in the pot. After the dance, he proceeds to stir the oatmeal in the pot.
At the end of the police chase, Madea is placed in the back of a cruiser. At the end of the scene, you clearly see Tyler Perry laughing and the cruiser stop during the cut.
L.B states that Brenda is a product of his father's old ways, long before he married the mother of Leroy, Vera and himself. However, this would make Brenda older than the three of them, and it is clearly obvious (and also stated) that Brenda is the youngest of them all.