In the middle of a long rectangular slab I sleep and lay
I am Round, Straight, or Curved, you could say
I cannot run forward/backward, but I sometimes can spin
And when I refuse to do so, I get poked with something thin
I live on a flat desert, close to the border
I require no food, no water, no order.
What am I?
I apologize for the cringy rhymes :)