I had a couple from Louisville, Kentucky on my tour a few nights ago. They had one son and a few daughters, and their son was partial to spending the night with friends. One night the young man was at a friend's and the father was playing peek-a-boo with the girls. He sat in the bed, resting on the pillows, and they hid at the foot of the bed. Every so often they would peek out and say "boo." Well this went on for a while and the father was playing along, everyone was getting excited then a little boy peeked out from the foot of the bed and said "boo." It happened so fast and unexpected that the father didn't notice. He told his wife that he thought their son was staying with friends. Yes, she said, rolling over for a moment. He jumped to look over the foot of the bed and there wasn't anyone there.
They've seen this little boy at least three times in different parts of the house. The wife calls him "Bobby" simply because that seemed right to her. But her husband calls him "Cody" because when they moved into the house that name was written on one of the doors.