Knick Knack Patty Wack

Today while we were driving in the car on our way to school the boys and I were singing with our sing-a-long CD. In the middle of a song, Case stated that he wanted to buy a knick knack patty wack. I said, 'I don't know where we could buy one of those.' Case said, 'At the knick knack patty wack store of course!' Duh! Of course, how could I have been so silly?