Mark and I were preparing lunch today when we heard from overhead a LOUD thud, immediately followed by clattering and then...total silence from upstairs. About 90 seconds later Andrew appeared in the living room and sat down in a chair with no apparent purpose.
Mark: "Andrew, what was that noise?"
Andrew: "What noise?"
Mark: "The one that was so loud it shook the ceiling and the neighbors probably heard it."
Andrew: "I don't know. I didn't hear it."