A seemingly normal photo of three friends enjoying a day at the park has left thousands of people confused after it went viral.
While at first glance it might look the picture - originally shared on Imgur - shows the women sitting down after a stroll, there is something strange happening on closer inspection.
Can you spot what's wrong?
Okay, we'll tell you....
If you look closely, it appears there is no seat on the bench and that the women are hovering in mid air!
The pic is the latest in a long line of images that have left the internet baffled.
Who could forget this infamous dress debate?
It made global headlines in February last year, with people divided over whether it was blue and black or white and gold.
It turned out the actual dress was blue and black, but many people are still baffled by the optical illusion.
What do you think?