Continuity mistake: Stan (Grandpa) gets impaled in his upper left arm by the metal jack part. The front of his jersey's short sleeve is saturated with blood, almost to the orange stripe near his shoulder. Helen goes to see her dad's injury, and Stan's upper shirt sleeve and shoulder are free of blood, but the lower part and his arm are covered. (00:12:09)
Continuity mistake: The upper left front of Stan's pants is blood-soaked, including a thick line above his kneecap. Stan gets up from taking a nap, and the blood is along the entire left side of his pants. (00:12:57 - 00:19:00)
Continuity mistake: The pages/sections of the newspaper on the table are roughly aligned. The upper right-hand corner is near the right edge of the napkin under the coffee cup. In the aerial view, the newspaper sections are staggered. The upper right corner of the top section touches the left side of the napkin, and the bottom section points towards the right corner of the napkin. (00:23:00)
