OK, time for a silly, strange post. Have you ever noticed that you can drink almost limitless amounts of water without feeling full? Whereas you can't drink very much Coke (just as an example) without starting to feel full. I Guess the water just passes right through you. I'm trying to drink more water now after camping when I drank about three to four full Nalgene bottles a day (1 Litre each).
By the way, the title of this post is from a song by a famous band. Bonus points if anyone knows it. You aren't allowed to use Google or similar tools. Although I wont be able to tell, if you cheat you'll have to live with it the rest of your life... or something like that.