No Use Not in Use

The cup is the shame of the jar
When none in one means none in both.

The last of the jar fills the cup.
The cup knows it is full for now.

The jar knows the null is now here.
The jar is gray and bare. So there.

Now, we wait. The jar will not stir.
What gets poured in it, it can’t guess,

But, if it had to guess, more air.
Light glints from what’s left in the cup.