Continuity mistake: When Malcolm is being the safety eagle at the childrens school convention, as he flails around on fire, he knocks the large space heater over. In subsequent shots it is suddenly standing upright again. (00:03:20)
Continuity mistake: When Malcolm is being the safety eagle at the childrens school convention, the items such as the iron and hair curlers, on the table, suddenly jump to the floor between shots, then back on the table. (00:03:25)
Continuity mistake: When Malcolm arrives home in his car, we see two shots of Sherri walking out of the front door. There's a table on the porch with three flower pots on it. In the second shot, a fourth pot has appeared on the end. (00:04:10)
Continuity mistake: When Sherri walks outside, and hugs Malcolm in his eagle suit, in the shot from behind, she puts her arms around his neck, above the suit's wings. In the next shot she is hugging him around the waist, under the wings. (00:04:35)
Continuity mistake: When Malcolm sneaks into the office, to use the computer and view the security webcam, he puts his box of belongings down on the desk. In subsequent shots the positioning of the items in the box has changed. (00:07:30)
Continuity mistake: When Big Momma is zipping up her dress at the beginning of the movie, the coat hanger she is using changes its shape between shots. (00:11:15)
Continuity mistake: How far rolled up Big Momma's skirt is, changes, as she tries to sit on the stool. (00:15:55)
Continuity mistake: When Leah Fuller is showing Big Momma the children, they go into Andrew's room, and he jumps off of his bed, flat onto the floor. Notice his toys all over the floor and desk. When he gets back up they are all positioned differently. (00:18:10)
Continuity mistake: After Big Momma has poured all of the milk inside of the cereal packet, for Carrie, in the following shot the milk bottle is lying down flat on the counter. In the next shot it's upright again, then flat again shortly after. (00:24:40)
Continuity mistake: When Sherri and Danielle are talking in the baby store, over the crib, about the humongous thong, between shots throughout the scene, the way Danielle holds the thong alternates from the back / front of it facing the camera. (00:26:25)
Continuity mistake: Many times between shots, during the scenes where Big Momma takes Andrew to the Nation Agenda software building, the direction, way and which hand Andrew holds his bubble gun in, changes often. (00:27:30)
Continuity mistake: When Big Momma walks through the metal detector at the National Agenda Software building, her bag strap falls down off of her shoulder, as the secuity man touchs her. In the next shot the strap is back up on her shoulder. (00:27:50)
Continuity mistake: After sneaking around in Tom Fuller's office, Big Momma exits, and sits Andrew down on the table. During the scene, as Big Momma talks to Tom, Andrew's dungaree strap alternates from falling down his shoulder, to up on his shoulder. (00:31:20)
Continuity mistake: When Malcolm leaves a message on the phone for Sherri, the mesaage has noticeable differences when Sherri listens to it. Malcolm pauses between the lines "..call from Phoenix" to "Wait - Carrie!" but on the phone, there's no pause. (00:35:20)
Continuity mistake: When Big Momma is making breakfast the morning she is supposed to be fired, she is wearing a necklace. After the family comes downstairs, the necklace is gone. (00:50:55)
Continuity mistake: When Malcolm/Big Momma goes to the beach, he is wearing a prosthetic bodysuit as we can see in shots of Big Momma in a bathing suit. He puts on a sun dress to cover up. Not long afterward, he chases Bishop down a pier and his mask comes off. We can see a heavier cloth bodysuit underneath the dress on his right shoulder, but Malcolm had no opportunity to change bodysuits. (01:01:05 - 01:05:50)
Continuity mistake: When Big Momma and Leah are teaching the children to dance, in one shot there is a closeup of Molly putting her head down and laughing. But a split second later they go to a long shot and she is now up straight listening to her iPod, with no time to move.
Continuity mistake: When Mrs. Fuller is telling Big Momma that the girls walking by in the spa are Victoria's Secret models, the gold watch on Big Momma's left hand is missing and you can see the seam of the costume on Big Momma's wrist. And in the next shot, the watch is back again.
Continuity mistake: During the bingo scene when Big Momma is about to fight the drunk elderly women, the picked numbers on the bingo board change from shot to shot dramatically.
Continuity mistake: When Leah Fuller is sitting down to watch the cheer club class at her house, her ponytail is on her right shoulder. But in the next shot, the ponytail is not on her shoulder.
