Continuity mistake: When Samantha leaves the room to answer the phone, some of Lester's bangs are down across the left side of his forehead, in opposition to his left-sided part. When Samantha returns, Lester's bangs are parted to the right with hair dangling on the right side of his forehead, which Lester cannot move with his hands zip-tied to the chair or by shaking his head. (00:38:30 - 00:41:20)
Continuity mistake: Ron (dad) brings Amanda her dinner. He carries a bowl approximately centered on a square plate. He quickly sets the plate on the table, so does not have time to adjust the position of the bowl. Ron walks away and the bowl is to the far side of the plate, and there are crackers filling the remaining space on the other side. (00:01:20 - 00:01:57)