In your mouth: The crust is like cardboard on the bottom (yes, I removed the cardboard), and gooey on top. Unpleasant. The pepperoni is spicy, but you get the impression this is to cover an "off" taste in the meat.
The next day: The moisture has redistributed itself in the crust. It tastes a lot less distinctive, which in this case is a good thing.
Overall: Strangely flat. Fresh pizza that you'd swear was frozen (and expired).