Just WHAT Exactly Is This Shadowy Shape?

Confused boy head in hands

It definitely one of the trickiest optical illusions we've seen to date!

Even when we take a long hard look at this picture, we struggled to see what it is...

 

Could it be a killer bug, straight out of our nightmares or just a dirty smudge on the wall... or something else entirely?

Thousands of people are scratching their heads over the confusing picture posted by Savannah Root in Missouri, USA. 

Read more: Can Your Brain Handle The Ultimate Optical Illusion Test?

Click to reveal the answer here:

 

Did you manage to see it? If so, you've better eyes than we have!