blackwidowrus: podborka_33.jpg
ankadk: Optical Illusion. via Paulo Furtado
margin-all: Optical illusion. Via 9gag.
get-high-and-go-low: 1. Stare at the red dot on the girl’s face for 30 seconds.2. Turn your gaze to a plain surface (ceiling or wall) and blink rapidly. OMFG I want to see the science on this. 
shoji: これは美味そう　» DDN視覚野 | DDN JAPAN / (DIGITAL DJ Network)