What’s the difference between a calzone and a pizza other then a calzone is covered in bread.?

[Gavin]

I’ve been in deep thought about this lately and I don’t know why.

[Lobstergirl, el principe]

A calzone has been called an inside-out pizza.

[Gavin]

Lobstergirl wrote: "A calzone has been called an inside-out pizza."

That's what I thought I just didn't know if people actually called it that and didn't feel like sounding even crazier then the way this question sounds.