This is mad.
A picture of a brick wall has gone viral because of its optical illusion. It seems like a normal enough red brick wall until you find out what's really happening in the photo.
It's one of those cases that when you see what's really there you won't unsee it again.
Have a look for yourself. See anything unusual in this photo?
You may think the optical illusion is the small stone in the centre and you're not entirely wrong. Except that's not a stone.
It's a brick wall with a cigar sticking out of it.
Now, I bet you can't look at that picture without seeing the cigar right?
Image via Arron Bevin 
