I find it far easier to consume vast amounts of calories when I'm eating straight carbs as opposed to foods with more balanced macronutrient compositions, such

I find it far easier to consume vast amounts of calories when I'm eating straight carbs as opposed to foods with more balanced macronutrient compositions, such as cheeseburgers. The fat and protein would fill me right up. I find it pretty easy to eat a whole bag of chips (1500ish kcal) and a bottle of soda (250ish kcal) in one sitting, but I likely wouldn't feel too well an hour or two afterward. Same goes for candy, it's so easy to just eat hundreds of calories when you're at your desk and not thinking too hard about it. If I were trying to maximize my caloric intake at McDonald's, I'd probably get the burger and also a large fries (500kcal) with the BBQ sauce (I could probably go through 3 or 4 packets at 50kcal each, so that's another 1-200) and a large soda (300kcal), for a total of 1800 kcal. Still not a fully day's worth, but close. The really hard part is getting sufficient protein for gaining muscle mass, especially if you're lactose intolerant or vegan/vegetarian...