A lot of the time, deals and promotional codes only end up making you spend MORE money than you would have done otherwise. However, every now and then, a deal comes around that is truly golden. A student dad-of-three has discovered the perfect way to make Mastercard's new partnership with Uber Eats work for you. With his hack, he managed to get 20 chicken McNuggets plus two large fries for just 77p! But you can use it for whatever your favourite MaccyD's meal is!Check out the video to find out how you can use this hack for yourself!