College go-to: Really, really, cheap pizza from the place with all the health code violations. Or, worse yet, Digiorno.
Adult upgrade: Mixed Vegetable Pizza (homemade, of course)

When the pizza place you regulary dine at keeps closing due to visits from health code officials, perhaps you should find a new restaurant. For the ambitious adult, check out this recipe for homemade pizza. It's like Papa Johns in your kitchen, only without your arteries crying out.