Yet another optical illusion is baffling the Internet - and this one has had people staring at their computer screens and smartphones unit they got it.
At a first glance, this picture looks like your fairly typical brick wall but it hides a secret that once seen, cannot be unseen.
The question is - can you see anything unusual about the picture? Does anything stand out?
Most people studied the picture, which has suddenly gone viral after first turning up on Spanish websites in 2014, and decided there was nothing out of the ordinary.
But look again - is there something hiding in the wall?
If you are still struggling, then here is the answer:
Illusion: Did you spot the cigar embedded into the wall? (Facebook)
That’s right, sticking out of the wall is a cigar - and now that you can finally see it, it is impossible to not see it straight away.
It’s easy to miss it as the brown shape of the cigar blends in to the wall to make it appear like it is just a gap between bricks.
Top pic: Facebook