The Moving Desk

When I was 5 years old I attended Catholic catechism at an old Grange that was built in the late 1800's.
I had the first of hundreds of paranormal experiences while attending catechism classes in this Grange.
It was a warm Saturday morning.  It was a bright sunny day and there was no wind whatsoever.
Suddenly, for absolutely no reason, a large wooden desk moved across the room.  It was a heavy desk and moved about 20 feet.
At first the teacher appeared to be panicked.  No doubt she soon realized her responsibility to the kids and said there was nothing for us to worry about.  She said it was the wind.  I don't think any of us believed her but at that age we weren't particularly concerned either.