17 optical illusions you'll have to look at twice (18 photos)
You can't trust anything on the internet, not even your own eyes. On the some of these photos and pictures will have to be looked at more than once, not twice, and not even three times before the brain finally understands what is on them happening. 
1. These legs look like they've been covered in oil, but they're just white paint. 
2. No, it's not a dent in the head, it's just a haircut 
3. A keyboard that you can stick to for hours 
4. Gate with 3D effect 
5. All these balls are the same color 
6. No, it's not a GIF 
7. Mural with an optical illusion in Mannheim, Germany 
8. Air conditioner grill, which is better not to look at for a long time 
9. A bird that looks like a rabbit 
10. The floor of the Florence Cathedral, from which the head is spinning 
11. Green world 
12. All lines in this picture are straight. 
13. Mirrored tissue box 
14. Shake your head or move away from the screen to see an old friend. 
15. No, this ship does not float in the air. It's a false horizon illusion 
16. Art that addictive 
17. See two people? Now take a look. 
