Can you spot what’s driving everyone crazy on the internet this evening?

Maybe try looking a bit closer.

It’s a brick wall but there’s also something tricky to spot in this latest optical illusion challenge.

The image is sweeping the internet today – in similar fashion to the famed blue and black or white and gold dress last year.

It comes after UK resident Arron Bevin posted it to his Facebook page earlier this week and said: "This is one of the best optical illusions I’ve seen."

The Facebook post now has nearly 30,000 shares and over 42,000 comments.

The brick wall is plastered across social media with everyone posting “once you realise you can’t un-see it.”

Bevin’s instructions are: "Just look at what you originally looked at straight away."

Here’s our clue - It’s something you smoke.