I vaguely remember being left behind once or twice when I was younger, but it's all cloudy. The closest story I can give ya about being lost is this:
When I was around 7 years old my family lived in a very large house. It had all sorts of awesome nooks and crannies to play hide and seek in, which my sister and I played all the time. One day I found the most amazing hiding space ever. I climbed to the top shelf of our walk in pantry and laid down behind this spare fabric my mom used for sewing. My spot was right next to a heating vent and the fabric was comforting, and I soon fell asleep. Needless to say, my sister really had no clue where I was hiding.
I awoke some 9 hours later, climbed down out of my hiding space, and opened the pantry door. Right in front of me stood my mother, who wore the strangest expression I've ever seen someone wear. It was a mixture of shock, puzzlement, confusion, relief, and anger all mixed into one. She dropped the phone (she was calling all the neighbors frantically) and gave me a hug. I didn't get punished though
Just told not to fall asleep during hide and seek again.