Where did you come from?

Jacob is always making us laugh and doing the funniest/weirdest/craziest things like running around in circles for no obvious reason.  Often times, Tony and I will ask him, "Where did you come from?" when he is doing one of his funny/weird/crazy things.  Now he has started asking us (and others) just out of the blue, "Where did you come from?"  It is funny to hear that out of a two-year old's mouth.  What is even more funny is that he expects a legitimate answer.  He cracks me up.