Continuity mistake: In the first two seasons, there are 3 bedrooms upstairs: Mama's, Fran's, and Sonja's. But after Buzz and Sonja move out and Aunt Fran dies, Bubba moves in and takes Aunt Fran's room. Vinton and Naomi are still in the basement complaining that they wanted Fran's room. However, originally there was another room upstairs, Sonja's room, that disappeared.
Character mistake: When it is announced that Mama's block has been chosen for the new city dump, Iola states that she would have to move too. Being that Iola lives across the street she does not live on the same block as Mama and therefore would not be affected.