Missing House
It's a glitch. Happens all the time.
Forum Discussion
Let's see. I have seen a flying, exploding dumpster over a phantom Luigi's:
http://media11.dropshots.com/photos/1072684/20130116/135248.jpg
and Dr. Hibbert clones doing surgery at the prison:
http://media9.dropshots.com/photos/1072684/20130116/135258.jpg
http://media11.dropshots.com/photos/1072684/20130116/135248.jpg
and Dr. Hibbert clones doing surgery at the prison:
http://media9.dropshots.com/photos/1072684/20130116/135258.jpg
