A: It's a pizza that's parallel to all other pizzas. It's like, you know, the pizza that exists in a parallel universe, but not really, because it's actually just a really good pizza that you can eat in your regular universe.
A: Yes, but be warned: it may alter your perceptions of reality and cause you to question the nature of space and time. Or it might just make you really hungry.
A: Unfortunately not yet. But we're working on it. Just pretend it's already available, and you'll be the first on your block to have one.