I've seen pictures like this countless times, so I'm not sure why it never occurred to me what was going on. I'd like to think I'm an observant person, but clearly not. This group -- Hidden Mothers -- on Flickr has a great collection of images with, well, hidden mothers (and sometimes fathers). My favorites are the ones that essentially are shapes holding a baby, or floating infants. They're creepy in some cases, but mostly comical -- a study in camouflage posing.
[ via Cup of Jo ]