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.
Suggested correction: Wouldn't there have been 4 bedrooms upstairs not 3? Mama's, Frans, Sonja's as mentioned but then also Buzz had a room making it 4 bedrooms upstairs.
Buzz lived in the attic.
Vint and the Kids Move In - S1-E1
Continuity mistake: When Vint moves in, he stays in the basement. Mama, Fran, and Buzz all have a "bedroom." Sonya moves into Fran's studio. Then when Naomi thinks she's pregnant, they argue over where Vint and Naomi will move to instead of the basement. Fran says she won't give up her room, Buzz says his room is in the attic. Sonya says her room is microscopic. Thelma has the biggest room. Then on Mama's Birthday, she gets Buzz to help clean out of the attic, which obviously wasn't his room as he stated. Then, of course, after Buzz, Sonya, and Fran are all gone there's only room for Thelma and Bubba upstairs.
Birthright - S3-E18
Continuity mistake: In this episode Vint says he was born on April 23. But in the lottery episode when Mama picks numbers with Iola she says Vint was born in March.
Gift Horse - S4-E5
Continuity mistake: After Iola gives Mama the tissue box, Mama goes inside and drops the tissue box and the tissue paper on the coffee table. The positions of both these things (and another knick-knack that was already on the table) change between shots.
Child's Play - S4-E8
Continuity mistake: When Eugene is playing with the ball on a stick it changes from being predominately purple to blue and red just before he pulls the string off. The cup size changes too. (00:11:05)
