Greek toilet paper

I am submitting work to an Australian magazine called WIPE, where all art should be on sheets of toilet paper. I need to find a strong paper for this and today I bought four different brands of Greek toilet paper rolls in my local grocery store.

Sofia in the store looked at my goods and smiled and then laughed.
I wonder what she was thinking. Then she said:
- Your family has left now?
- Yes, yes I am here by myself on the island, I said.
She laughed again, and still I wonder what she was thinking.

Her English is not perfect and my Greek is bad so I refrained from trying to explain what I was going to use the paper for.

It's not easy to explain anyway...