As big as I am I can fit through a 16inch by 16inch hole
Is that the size of people's openings into their attics?
I had a weird dream that I was separated from my daughter in a mall.
She had gone through an open window that locked closed in front of me before I could go through.
I could not open it.
I could not break it since it was some sort of special thick green glass.
Frantic to find a way to reach her, I went into the next room and the heavy steel door locked shut behind me.
The only way out of this room that I could find was a tunnel through the wall out into the rest of the mall, but my end of the tunnel wasn't even quite big enough to even fit my head through.