The Cardboard Box

I built a cardboard house that came with four large flaps. And when they're folded over the roof it over-lapse. I have to crouch inside it. It's not made very tall. But when I go to stand up the roof gives way and all. It hasn't got a window. It's dark without a light and nothing to be feared when nothing is in sight. I can't lay down inside it. It's much too small to sleep and if I start to nod off, I'll hit the wall and weep. I live alone inside it. There isn't room for more. And if someone came over they'd see there is no door. I haven't got a mailbox and live with no address. And if you want to find me you'll simply have to guess. I move around quite often. It's not my place to brag. But you won't say I'm rich when I grab my house and drag. I'm happy once inside it and live from day to day. And if you should come over, I'll flip it and we'll play.