Glossy Legs Leave Internet Agog (Scientific American):
“…A young artist has posted a picture of their legs, which are impossibly encased in shiny shrink-wrapped plastic. Or are they? The more you look at it, the more likely you will realize that the shell is not plastic, but rather bare skin with a few streaks of carefully applied white paint. And for many of you, it will then switch back to plastic again!”
—> For more, you can enjoy SharpBrains’ top 25 brain teasers and visual illusions.