swedish artist patrik svensson has drawn a series of flippable illustrations that are understandable both right side up and upside down.
Mind-bending optical illusion tattoo by Paul O'Rourke at Allstar Ink in Limerick, Ireland.
Two faces minimal tattoo - 🍄 (Tattoo Pictures)
AWESOME arm tattoo picturing a circle made out of irregular-sized blocks and forming a cool optic illusion.
Black Ink Tattoos by Japanese Artist Kenji Alucky Sacred art on sacred bodies. Black ink tattoos by Kenji Alucky. Japanese artist Alucky (a.