Uh, sorry Buzzfeed, but it's called "frozen custard."Yesterday, Buzzfeed, a favorite news source and time waster for millennials, published a listicle, "Here Are The Best Soft-Serve Places In The U.S."The authors explain that the list was built with a handy-dandy algorithm that examined the number of reviews and star ratings "for every brunch spot on Yelp."…