1. Download the McDonalds app

2. Make an account
3. Go to your local McDonalds with the self order machines, they are everywhere
4. Use one of your build in coupon codes for a discount on food
5. Use the Coupon and take a screenshot of the QR code
6. Now goto a new machine and redeem the coupon
7. Now it will say that the code is invalid
8. Now go to a McDonalds service helper and tell them that u just tried to redeem (what ever food you want)
but it says invalid code, now they will go to the machine and see that it says invalid code, and they will now give you what ever you said you redeemed
9 Enjoy your free food
BONUS: (If one soda wasnt enough, then put a hair in your drink and tell them that there is a hair in it, then they will look and say, "we are sorry, we will provide you with a new one"
Enjoy another soda!