Ghost of Christmas past?

I (the 'guide') cannot imagine how you managed to insert yourselves into my picture of many years ago. I forgot how you can move through time, as you have appeared (when I look back) in many 'old masters' paintings. This takes the fruitcake, I wanted to create a nostalgic record of a well-loved Christmas and I don't remember you being there when I took the picture. Pickle, "You know we can appear and disappear at will?" Me, "Yes, but....."
LITTLE FLY upon the card/ Give an inch, you'll take a yard/ As this is the season of goodwill/ You'll fly when you have had your fill.