I was in line at McDonalds recently, as I do from time to time. I’m a Diet Coke personage and McDonalds has the best Diet Coke in the land. Interestingly, all sizes are $1.04, small, medium and large, which I think is odd, but there you have it. They serve it at a certain temperature and mix the syrup with special water (not joking) and they put just th…