Reversible Face
The bearded man wearing the hat below seems to be in a good mood. If he stands on his head, however, the rumor is that his mood changes very quickly.
Continue reading the post to view an inverted version of this picture.
When viewed upside down, he seems to be in a sour mood. Also note how his hat transforms into a turtleneck sweater.
Hello:
Do you know which illustrator created this optical illusion? Which era did it come from?
Thank you.
This one is modern. It was used on an advertisement for Snickers candy bars:
http://adsoftheworld.com/media/print/snickers_beanie_face