The accompanying description to this illusion should go something like this: “Them little maids have been to town to purchase postage stamps”. Then it’s your assignment to rotate the picture by 180 degrees, and read: “And now are much alarmed to note their actions watched by tramps”! It took sometime before I could see the maids transform to “tramps“, but describing those little mutants as “maids” was even more puzzling to me! The style however closely matches the “Drowning or Safe” illusion. Could it be the author is the same?
