Elanor:
Seriously? I mean... Seriously? I don't think that's how the human body actually works.
I agree. Beer enemas work great for getting drunk quickly (I've never done it, but sadly, studies have actually confirmed this, and it's easy to poison yourself) but that's not how metabolism and digestion works for food, methinks.
Food has to go through your stomach first because it'll get broken down for what's useful and what isn't. What isn't ends up in the place that you put the butter...so...yeah.
