The White Orb

It initially appeared as a "white orb," a tiny speck of light on the wall of our living room.  It increased in size and continued to do so as it seemed to move completely out of the wall.  It looked like a round ball of fog.  It hovered and stayed visible for quite a long while.  Finally it disappeard.  As I talked on the phone with the boy I liked at the time, it reappeared.

"What do you think it is, " Jeff asked?