I will elaborate.
I am designing a website for a fictional pizza shop which only has one outlet, a small business. Thus the website is basic and just has some brief information about the shop, a menu and a phone number.
The purpose of the exercise is thinking about navigational hierarchy, and producing a design to a specified brief - taking into account user demographics and the like.
And I agree with Spencer, I like going through all the toppings and sides and assembling my order at my own pace. Pizza Hut often has bonuses when your order online too, like free fries or garlic bread.