Clench the disembodied tooth of your solipsism in the womb of your fist with your eyes closed and let it bite your flesh.
In that eyes-closed world you can feel the roots and ridges pressing back like a kicking fetus that can't understand its own existence, much less the existence of anything else.
The blood of the world you don't believe in is trickling from between your fingers
your pain is leaching out onto the living room carpet into the stratosphere. And as you and the tooth become one in the dark you can feel the fist of something larger closing around you.