So you try to do what you normally do on normal days but of course it's not normal anymore because there's a giant fucking hole in the middle of the floor so now all that you normally do on normal days involves a lot more edging and dancing around on your tiptoes. Try to get some food, gotta walk around the hole first. Need to meed your bathroom needs, make sure you're on the side of the room where the bathroom connects or else you won't make it there. And you don't even think about meeting your bathroom needs in the hole because that's just plain unsanitary.
You stare at it and it stares at you. Of course it wins every time because isn't a pupil a hole anyway? That makes your wonder if maybe all this edging and dancing around on your tiptoes that you've been doing has been on one huge iris around one huge pupil. In any case, it's hard to avoid the hole and you worry occasionally that you'll edge and dance right into the hole itself if you don't concentrate enough. Suddenly being holed up in the underground became significantly less relaxing. Too bad it's already nightfall outside and everyone knows that there are strange predatory things out there where it's more cold than hot and the closest train tracks are high above the ground and don't host crazy siamese boxcars. None that you've seen, anyway.