Screenwriter Darryl Quarles came up with the idea for the name "Big Momma" because it was what the neighborhood kids used to call his own real life mother.
In addition to the placement of the necklace, the simple fact that Malcolm was wearing the necklace in front of Sherry is a huge error. The necklace belonged to Big Momma. Sherry should have noticed this.
Near the end, when Malcolm discovers the money in the trunk, Sherry walks in and he slams the trunk, throwing a pile of toys on top of the money. In the very next shot when he opens the trunk to show her the money there are no toys inside.
Why is it that in the thunderstorm scene when Sherry gets into bed they call it a mistake of having the mustache show up on what sherry thinks is big momma.
A
What I know is the scene shows that during that night Malcom who is dressed up as big momma took the big momma mask off so he could sleep better without his face sweating under the mask. That is why his musdache is showing. Then the next scene in the morning it shows he has put the Big Momma Mask back on probably after Sherry went to sleep so that she would not notice that who she thought was Big Momma laying next to her was a man.
Q
What are the differences between the British BBFC-12 version and the uncut US version?
A
In order to obtain a BBFC-12 rating, four scenes, all involving fight sequences, had to be cut, e.g. head-buts or kicks. This leads to a difference of 8 seconds. A detailed comparison between both versions with pictures can be found here.