On Monday, Instagram user Hunter Culverhouse shared this mind-bending photo of their legs to their Instagram account.

People were instantly confused by the photo (which had been taken down by Wednesday afternoon).

Why are these legs so shiny?

Spoiler alert: It's not oil, it's white marks.

The picture was picked up by Twitter accounts, who helped spread the hysteria.
Once you see it you can't unsee it
are these legs shiny and oily or are they legs with white paint on them
Some people were confused.

Then amazed.

Then also kinda mad that the illusion had been spoiled for them.
Once you realize that the legs aren't shiny & it's just paint.. you can never see the shiny legs ever again smh
Maybe keep this one a secret if you know...
This is so fried!! They were pure shiny legs until I read the caption and now they're just legs with white paint on… https://t.co/271FIuLKWC
UPDATE
Culverhouse said the whole thing was sort of an accident.
"I was finishing off some art homework and had some white paint left on my brush and just decided to draw random lines, I had no intentions of making it look shiny," Culverhouse told BuzzFeed News.