Continuity mistake: When Hal is swerving into and away from the bee, during the close-ups, there is a white van behind Hal's car. In the wide shot, there is no van. (00:20:04)
Continuity mistake: Hal shows Dewey that he fixed the microwave so that it works with the door open. There is a red cloth inside. Hal then shuts off the microwave and when he and Dewey start talking the cloth changes position from shot to shot.
Continuity mistake: When Lois goes outside to meet Hal at the clothesline, she leaves the door open. In a few shots during their conversation, the door is closed in the background. (00:06:20)
Continuity mistake: In the scene where the grandma is talking at the table with Reese and Malcolm, notice the bottle on the table next the the grandma, between takes the cork from the bottle goes from being on top of the bottle to next to the bottle, it changes in almost every different shot.
Continuity mistake: When Reese pushes off the table, he knocks one of the place mats out of place. In the next shot, it is where it's supposed to be. This switches back and forth in the scenes. (00:01:27)
Answer: It is made up - although it is implied she is Croatian, she never mentions it herself.