You walk down a dark hallway and think "Dam, I'm out of torches"
You become terrified of the darkness and leave all your house lights on.
You see a glass house and want to build it in game.
You dream in blocks (i've done this)
you look at the nice square tiles in your bathroom and think you should be punching them while you shower so you aren't wasting time.
it gets dark outside and you worry because you aren't carrying a sword.
the sound of someone opening a coke bottle makes you jump
you see a ramp and are momentarily confused by it.
you catch yourself driving close to parked cars to try and get a boost.
you start aligning everything in your house on right angles.
you think about digging a wall out of your room to get more space.
the tops of trees start to look like faces
http://skitch.com/shaungreiner/d21i5/mi ... tree-faces
you find the sunrise awe inspiring
You wake up in the morning, look outside and expect the sun to be square.
-alternate-
you look outside, see the sun, and decide that it's time to go to bed.
You stare at tile floors and consider what minerals might be beneath them.
You stare at tile floors and wonder how big a MC blocks would be IRL.
When you see this
http://i.imgur.com/AtK43.jpg
when the world looks like this to you
http://i.imgur.com/3Vqsq.jpg
when you watch the sun set and you look around for shelter