"Here's a puzzle: this morning I made two little sammys out of bread and put them in a bag and then wrapped the bag around itself and put the bag in my backpack. When I got to school, the sammys were gone. What happened?? "Wha Happen?" it's a BrainBuster. I sure wish I had those sammys, though. And I'm not going to want them when I get home, so the whole thing's a bust. Did an evil goblin steal my sammys? Like Descartes, I can not rule out this possibility."