Continuity mistake: During the cafeteria scene, Carl initially has his left arm behind Fern's, resting on the top of her chair. When there's a quick shift to a wide view of the cafeteria, Carl is now holding a bag of potato chips in his left hand, which is over the table (not resting on the back of Fern's chair). The wide camera view MIGHT be trying to show that time has passed and lunch is almost over. However, Angela is still talking about her tattoo, indicating that there has not been a gap in time. (00:06:19)
Continuity mistake: There are some continuity problems during the cafeteria scene where Fern is being introduced to her co-workers. Fern is holding a banana, peeled almost to the bottom, and has several slices of banana on her peanut butter sandwich. There is another banana peel on her paper lunch bag. Fern is shown taking a bite of her sandwich. A little later, Fern is holding a partially peeled banana but no slices can be seen on her sandwich. If this is her second sandwich, she already peeled two bananas. (00:05:59 - 00:06:32)