A dad and his son, who are dressed alike and even sitting the same way, are watching TV together when they see a commercial for Visa Checkout's Sunday Delivery Deal. You can get "50 percent off menu-priced pizzas" from Pizza Hut. The dad wonders why anyone would only want half of a pizza. The son explains to him that you still get the whole pizza and just pay for half. And, he asks his dad if they can get one. His dad replies that they can actually get two -- two halves, that is. His son rolls his eyes. Apparently, he doesn't appreciate the math joke.