“It must be my lucky day!” This person is rejoicing and reveling in their potentially newfound luck as their pack of cookies managed to house two extra delectable snacks. By chance, of course. Unless the cookie gods took a shining to this particular person and decided to bless them with two more cookies.
It’s most certainly more bang for your buck. All the bang for your buck. That’s two extra cookies you essentially got for free. We love free things, especially when it comes to food. We think it’s safe to assume that this person is feeling all kinds of lucky right about now.