This image has prompted a new social media debate.
#TheDress has now been laid to rest in peace (or pieces, if you will, after Twitter tore it apart trying to decide what colour it was). The Internet has now found a whole new head scratcher to argue about.
An image first posted on 9GAG on their Facebook page has prompted a new social media debate - is this cat going up or down the stairs?
The black and white image, seemingly an optical illusion, has since been shared over and over again on Twitter. Netizens are either looking for the right answer or stating their own opinion and explanation.
This could be a paradox to rival Schrodinger's cat.
While Twitter puzzles over the question, tell us what you think - is the cat going up or down? Share your opinion in the comments section below.