This makes our brains feel ouchy!

BBC trainer Marc Settle recently stumbled across a sanity bothering optical illusion while packing away his son's wooden train track.

Take a look! WHAT IS HAPPENING???

My toddler's train track is freaking me out right now. What is going on here?! pic.twitter.com/9o8bVWF5KO

— marc blank-settle (@MarcSettle) April 6, 2016