What is Optical Illusion?
1.
seeing things differently than they actually are
I saw an optical illusion when I was drugged up from my root canal.
See
2.
Something to look up when you're reaalllly reallllly fucked up.
Seriously. Try it. It looks so fucking awesome.
Dude #1: Dude. This thing looks like it's spinning
Dude #2: Dude. It fucking is
Me : No, it's just some circles... what a gay optical illusion
Me : Wait, pass the joint
See