Prison bed is when you take off all your bedding to wash it and while it's in the washer and dryer you are laying on the bare mattress with an assortment of blankets then as the real sheets and comforters are clean you still do not make the bed for several days out of laziness.

My dog actually prefers prison bed because he likes the textures of the different blankets that I layer including the electric blanket instead of just the coverlet so he is actually disappointed when I make the bed.

When you eat dirt for the first time and leave your family to build a shack in the woods