Someone mooning someone or tig-o-bitties?
It's like an optical illusion. Remember this one:
Young Lady or Old Lady?
Do you see both the old woman and the young woman? The old woman's mouth is the young woman's necklace. The old woman's nose is the young woman's chin. They share their hair, the scarf, the fur coat and the feather in their hair. This is a classic eye trick that has appeared in psychology books for years as a classic example of an optical illusion!