Continuity mistake: When Ray is yelling at the kids for throwing his golf clubs down the stairs, two stuffed animals fall down from the shelf. After Ray is done lecturing the kids, you can see the animals are back on the shelf when it shows Raymond talking to Debra.
Continuity mistake: During the scene with Ray and Frank playing Ping Pong, in shots showing Frank's face, his hair is pointing out, but shots from behind him show his hair is back down.
Continuity mistake: During the scene when Ray and Frank are playing Ping Pong, you can see that the balls are on the floor, but in a few shots, they're not.
Answer: War.
By whom?
Edwin Starr.