"Last Week Tonight" host John Oliver is passionate about a lot of things, but the latest object of his anger -- pumpkin spice -- seems a little out of place among his regular, more political topics. That's not to say his argument calling out the irrationality of America's very seasonal love for pumpkin and all of its flavorings is any less logical. Don't worry, there're plenty of jokes mixed in with his surprisingly cogent argument.john oliver pumpkin spice