Weirdness

This is an old baptismal font at Jamestown, Virginia.
Today in Sunday School, a friend of mine was talking, so I could stare at him without being rude.   As I continued looking at him, he ceased looking like himself and became like a stranger.  I've known this person for almost thirty years.  It made me feel like I didn't know him at all.  Isn't that weird?
Have you ever had this to happen?  It's not the first time it's happened to me.