The first time Sam throws the fried chicken out the window, you see one puck land in front of a container full of roses. When Sam calls Melanie, the puck is gone.
Sam was seen drinking orange juice but when Cat pulls the jug of orange juice out of the fridge, it is full.
When Sam throws the tub of fried chicken pucks out the window, pay attention to where the tub lands. However, when Sam eats the chicken puck off the floor, the tub is in a completely different place. It couldn't have rolled there because the tub would have bounced. Also, it couldn't have bounced to the spot where you saw it the second time because it would have barely moved.
Sam is drinking a glass of orange juice that looks like orange juice. Later, the pitcher of "orange juice" that is removed from the refrigerator is orange colored water.