I dreamed that a nun asked me for money and I gave it to her, but the money turned into toilet paper.

When I was a child, I often listened to my mother explain my dreams.

I remember having the same dream as you.

Mother explained:

A nun is not a nun, but a nun.

Asking you for money is not real money, but paper money.

Maybe she strayed into the underworld for some reason, and the positive electrode needed to ask for directions.

If you give real money, it becomes paper, and if you give paper money, it becomes real money.