Hazel opened the refrigerator, and the fridge's light didn't go 'ON'.
The Refrigerator was never plugged in. Refrigerators have had light bulbs since 1910.
When Hazel initiates her plan to get the milkman moving faster she gives him biscuits in a basket to take with on his route. He places the basket on the seat of the truck but in his rush to get to the next stop he gets in the truck and sits on the basket.