You are correct in the normal world......but we upgraded to big tumblers....Just fill the tumbler with Ice add 4 shots of Rum and top it off with a can of Diet Cherry Coke. A few pics have made it into this thread over the years...here's a couple from 2013. I don't know what Mark who seemed to be caught in the act was doing, but you can clearly Dad with all the tools of the trade mixing up his favorite concoction.