1. This airplane propeller.
2. This...whoa.
3. This living, breathing utility pole.
4. This couple in an Ames Room.
https://www.flickr.com/photos/silly_little_man/5132242358
https://www.flickr.com/photos/silly_little_man/5132239872/in/photolist-b68QZ8-b68Nu6-8Pw5Rd-8Pw57m-afoFbS-aDfi28-chtCeG-cjgwwo-8vJgZ6-98hy7f-e97BuK-5ouuHm-7i5AdL-kWU5kY-7i1Sh8-98hxr1-4H7db5-9PAavo-6cafkX-7i5CW7-juAjm-K9Edym-jKgd2h-iuJZrb-iuHAEG-iqCokx-ikwKN6-hLB1Fy-aMc966-aMc8yX-aMcccM-cp8MZA-aMcb8M-aMc8PZ-9PxdF6-qpvprF-bFipPZ-cp8w3o-crU1qo-4ScBUK-a5V428-4kwfD8-6ATpmS-cp8z8d-bFiq7n-bFipXF-6bh1e2-9XhBg6-9XhvSK-9htzsF
5. This mind-bending 3D chalk art by Edgar Müller.
Natural Math (CC BY-SA 2.0) / Via Flickr: 26208371@N06
6. This never-ending drawer.
7. These pink dots that disappear when you stare at the black cross in the center.
Ben Cahn
8. Ow ow ow ow ow ow ow.
9. Dude wtf.
Universal Pictures / Via giphy.com
10. The rotating-mask illusion.
youtube.com / Via gifsoup.com
11. This trippy work of art by Regina Silveira.
James Wu (CC BY-SA 2.0) / Via Flickr: 64459584@N00
12. This flexible paper sculpture.
13. This dude who took a 360-degree photo.
14. This train that moves into or out of the tunnel, depending on which direction your mind decides it should go.
15. This water-refraction experiment.
youtube.com / Via cheezburger.com
16. Craaaaaaaaaaaaaaaap.
