It's pretty simple really...MILK SPOILS!!! Whether its in the fridge or not, putting the cap back on is kinda necessary to keeping it fresh. I wouldn't bitch if you didn't do this EVERY TIME. What the hell is wrong with you?
I'm sick of you leaving your shit all over the place, and not paying me back when I pay your electric bill. And drinking my beer. And hitting on my girlfriend when you're drunk. I've had enough. I'm taking a stand. This site is dedicated to you and the millions of other dick roommates around the world.