I'm not for sure this works beacause I have only done this once but to get a free pizza then order one with $39 or less the take away you door. Then The delivery man/woman should say "what do you mean you don't have enogh money." I think she might say that she needs to take something away from you but I'm not sure. Then right after that she should say something like that you must really be poor. Then she should set down the pizza and leave.