Soylent Cola is people. Just another sci-fi refernce. Well, its sort of a cross reference as Futurama made a joke about the stuff. Its one of my favourite jokes in the show so I thought I'd honour it with a little adverty graphic thing in my show.
Fry: My God, what if the secret ingredient is people?
Leela: No, there's already a soda like that - Soylent Cola.
Fry: Oh. How is it?
Leela: It varies from person to person.